94-6749. Natural Resource Damage Assessments; Final Rule DEPARTMENT OF THE INTERIOR  

  • [Federal Register Volume 59, Number 58 (Friday, March 25, 1994)]
    [Unknown Section]
    [Page 0]
    From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
    [FR Doc No: 94-6749]
    
    
    [[Page Unknown]]
    
    [Federal Register: March 25, 1994]
    
    
    _______________________________________________________________________
    
    Part II
    
    
    
    
    
    Department of the Interior
    
    
    
    
    
    _______________________________________________________________________
    
    
    
    Office of the Secretary
    
    
    
    _______________________________________________________________________
    
    
    
    43 CFR Part 11
    
    
    
    
    Natural Resource Damage Assessments; Final Rule
    DEPARTMENT OF THE INTERIOR
    
    Office of the Secretary
    
    43 CFR Part 11
    
    RIN 1090-AA22
    
     
    Natural Resource Damage Assessments
    
    AGENCY: Department of the Interior.
    
    ACTION: Final rule.
    
    -----------------------------------------------------------------------
    
    SUMMARY: This final rule amends the regulations for assessing natural 
    resource damages resulting from a discharge of oil into navigable 
    waters under the Clean Water Act or a release of a hazardous substance 
    under the Comprehensive Environmental Response, Compensation, and 
    Liability Act. The Department of the Interior has previously developed 
    two types of natural resource damage assessment regulations: standard 
    procedures for simplified assessments requiring minimal field 
    observation (the type A rule); and site-specific procedures for 
    detailed assessments in individual cases (the type B rule).
        This final rule revises the type B rule to comply with all but one 
    aspect of a court order. This rule establishes a procedure for 
    calculating natural resource damages based on the costs of restoring, 
    rehabilitating, replacing, and/or acquiring the equivalent of injured 
    resources. This rule also allows for the assessment of all use values 
    of injured resources that are lost to the public pending completion of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources. The Department will soon issue a new proposed 
    rule to address assessment of lost nonuse values of injured resources.
    
    EFFECTIVE DATE: The effective date of the final rule is April 25, 1994.
    
    FOR FURTHER INFORMATION CONTACT: Mary C. Morton, Cecil Hoffmann, or 
    David Rosenberger at (202) 208-3301.
    
    SUPPLEMENTARY INFORMATION: This preamble is organized as follows:
    
    I. Background
        A. Statutory Provisions
        B. Regulatory History
        C. Judicial Review
        D. Implementation of the Court Order
        E. Other Rulemakings
    II. Overview of this Final Rule
        A. Measure of Damages
        B. Restoration and Compensation Determination Plan
        C. Resources Covered by the Natural Resource Damage Assessment 
    Regulations
        D. Other Significant Issues
    III. Response to Comments
        A. General Comments Concerning this Rulemaking
        B. Overall Damage Assessment Process
        C. Resources Covered by the Natural Resource Damage Assessment 
    Regulations
        D. Trustee Coordination
        E. Preliminary Estimate of Damages
        F. Reasonable Cost of an Assessment
        G. Calculation of Baseline
        H. Measure of Damages
        I. Restoration, Rehabilitation, Replacement, and/or Acquisition 
    of Equivalent Services Versus Resources
        J. Selection of a Restoration, Rehabilitation, Replacement, and/
    or Acquisition Alternative
        K. Costs of Restoration, Rehabilitation, Replacement, and/or 
    Acquisition of Equivalent Resources
        L. Compensable Value
        M. Date of Promulgation of the Natural Resource Damage 
    Assessment Regulations
        N. Judicial Review of an Assessment
        O. Use of Collected Damages
        P. Miscellaneous Comments
    
    I. Background
    
    A. Statutory Provisions
    
        The Clean Water Act, as amended (33 U.S.C. 1251 et seq.) (CWA) and 
    the Comprehensive Environmental Response, Compensation, and Liability 
    Act of 1980, as amended (42 U.S.C. 9601 et seq.) (CERCLA) authorize 
    natural resource trustees to recover compensatory damages for injury 
    to, destruction of, or loss of natural resources resulting from a 
    discharge of oil into navigable waters or a release of a hazardous 
    substance. CWA sec. 311(f); CERCLA sec. 107. Federal and State 
    officials may be designated to serve as natural resource trustees under 
    CERCLA and CWA. CERCLA also recognizes the authority of Indian tribes 
    to commence actions as natural resource trustees.
        Damages may be recovered for those natural resource injuries and 
    losses that are not fully remedied by response actions. All sums 
    recovered in compensation for natural resource injuries must be used to 
    restore, rehabilitate, replace, or acquire the equivalent of the 
    injured natural resources. Trustee officials may also recover the 
    reasonable costs of assessing natural resource damages and any 
    prejudgment interest.
        CERCLA requires the promulgation of two types of regulations for 
    the assessment of natural resource damages resulting either from a 
    discharge of oil under CWA or from a release of a hazardous substance 
    under CERCLA. CERCLA sec. 301(c). The type A regulations provide 
    standard procedures for simplified assessments requiring minimal field 
    observation. The type B regulations provide site-specific procedures 
    for detailed assessments. Both regulations identify the best available 
    procedures for determining natural resource damages. Assessments 
    performed by Federal and State trustee officials in accordance with 
    these regulations receive a rebuttable presumption in court. CERCLA 
    sec. 107(f)(2)(C). The promulgation of these regulations was delegated 
    to the Department of the Interior (the Department). E.O. 12316, as 
    amended by E.O. 12580.
        The Oil Pollution Act (33 U.S.C. 2701 et seq.) (OPA) was signed 
    into law on August 18, 1990. Among other things, OPA amended the 
    natural resource damage provisions of CWA. OPA authorized the National 
    Oceanic and Atmospheric Administration (NOAA) to develop new natural 
    resource damage assessment regulations for discharges of oil into 
    navigable waters. The Department is coordinating its rulemakings with 
    NOAA to ensure, to the maximum extent possible, that consistent 
    processes are established for assessing natural resource damages under 
    CERCLA and OPA. OPA provides that until NOAA develops its regulations, 
    the Department's regulations may be used to assess natural resource 
    damages under OPA. OPA sec. 6001(b). NOAA published a proposed natural 
    resource damage assessment rule on January 7, 1994. 59 FR 1062.
    
    B. Regulatory History
    
        The Department has issued various final rules for the assessment of 
    natural resource damages: 51 FR 27674 (Aug. 1, 1986); 52 FR 9042 (March 
    20, 1987); 53 FR 5166 (Feb. 22, 1988); and 53 FR 9769 (March 25, 1988). 
    These rulemakings are all codified at 43 CFR part 11.
        The natural resource damage assessment regulations provide an 
    administrative process for conducting assessments as well as technical 
    methods for the actual identification of injuries and calculation of 
    damages. Under the regulations, both type A and type B, assessments 
    consist of four major phases.
        The first phase of an assessment conducted under the regulations 
    involves the activities that precede the actual assessment. For 
    example, upon detecting or receiving notification of a discharge or 
    release, trustee officials perform a preassessment screen to ascertain 
    whether further assessment actions are warranted.
        The second phase involves the preparation of an Assessment Plan. 
    The Assessment Plan, which is subject to public review and comment, 
    assists the involvement of potentially responsible parties (PRPs), 
    other trustee officials, the general public, and any other interested 
    parties. The Assessment Plan also ensures that assessments are 
    performed at a reasonable cost.
        In the third phase, trustee officials conduct the work described in 
    the Assessment Plan. The work involves three steps: Injury 
    Determination; Quantification; and Damage Determination. In Injury 
    Determination, trustee officials determine whether any natural 
    resources have been injured. If trustee officials determine that 
    resources have been injured, they proceed to Quantification, in which 
    they quantify the resulting reduction in services provided by the 
    resources. Finally, in Damage Determination, trustee officials 
    calculate the monetary compensation to be sought as damages for the 
    natural resource injuries.
        In a type A assessment, trustee officials perform Injury 
    Determination, Quantification, and Damage Determination through the use 
    of standardized procedures involving minimal field work. The Department 
    has adopted a phased approach to developing type A procedures for 
    different environments. Only one type A rule has been developed to 
    date. The existing type A rule provides for the use of a computer model 
    to assess damages from small releases or discharges in coastal or 
    marine environments. For other releases or discharges, trustee 
    officials conduct a type B assessment, in which Injury Determination, 
    Quantification, and Damage Determination are performed through the use 
    of a range of alternative scientific and economic methodologies.
        The fourth phase of every natural resource damage assessment, 
    whether the type A or type B rule is followed, consists of post-
    assessment activities such as: Preparation of a Report of Assessment; 
    establishment of an account for damage assessment awards; and 
    development of a Restoration Plan for use of the awards.
    
    C. Judicial Review
    
        A party may petition the Court of Appeals for the District of 
    Columbia Circuit to review any regulation issued under CERCLA. CERCLA 
    sec. 113(a). A number of parties filed such petitions for review of the 
    natural resource damage assessment regulations. The type A rule was 
    challenged in State of Colorado v. United States Department of the 
    Interior, 880 F.2d 481 (D.C. Cir. 1989) (Colorado v. Interior). The 
    type B rule was challenged in State of Ohio v. United States Department 
    of the Interior, 880 F.2d 432 (D.C. Cir. 1989) (Ohio v. Interior).
        The court in Ohio v. Interior upheld various challenged aspects of 
    the type B rule but did remand three issues. The court ordered the 
    Department to revise the rule to reflect the statutory preference for 
    using restoration costs as the measure of natural resource damages. The 
    court used the term ``restoration costs'' to encompass the cost of 
    restoring, rehabilitating, replacing, and/or acquiring the equivalent 
    of the injured natural resources. The court also ordered the Department 
    to revise the rule to allow for the recovery of all reliably calculated 
    lost values of injured natural resources, including both lost use 
    values and lost nonuse values, with no specific hierarchy of 
    methodologies required of trustee officials in estimating those values. 
    Use values are derived through activities such as hiking or fishing. 
    Nonuse values are not dependent on use of the resource. Nonuse values 
    include existence value, which is the value of knowing that a resource 
    exists, and bequest value, which is the value of knowing that a 
    resource will be available for future generations. Finally, the court 
    asked the Department to clarify whether the natural resource damage 
    assessment regulations apply to natural resources that are not actually 
    owned by the government.
    
    D. Implementation of the Court Order
    
        The Department published an advance notice of proposed rulemaking 
    on September 22, 1989, to announce its intent to revise the type B rule 
    to comply with Ohio v. Interior. 54 FR 39016. The Department issued a 
    proposed rule on April 29, 1991, with comments requested by June 28, 
    1991. 56 FR 19752. On July 2, 1991, the Department extended the comment 
    period to July 16, 1991. 56 FR 30367. On July 22, 1993, the Department 
    reopened the comment period to allow consideration of additional 
    comments, including newly developed information on the contingent 
    valuation methodology (CV), the only method currently available for the 
    express purpose of estimating nonuse values. 58 FR 39328. The comment 
    period was originally reopened until September 7, 1993, and then 
    extended until September 22, 1993. 58 FR 45877 (Aug. 31, 1993).
        After reviewing the comments received in response to the July 22, 
    1993, Federal Register notice, the Department has decided to issue a 
    final rule addressing all aspects of the Ohio v. Interior remand other 
    than the assessment of lost nonuse values. The Department is 
    considering revising the type B rule to include certain standards to 
    improve the reliability of CV when used to calculate lost nonuse 
    values. In order to ensure that interested parties have an adequate 
    opportunity for review and comment, the Department will soon publish 
    the standards in a notice of proposed rulemaking. Pending completion of 
    that rulemaking, the Department is temporarily leaving unchanged the 
    remanded language of the original type B rule concerning assessment of 
    lost nonuse values.
    
    E. Other Rulemakings
    
        CERCLA mandates biennial review and revision, as appropriate, of 
    the natural resource damage assessment regulations. The Department 
    plans to publish an advance notice of proposed rulemaking to begin the 
    biennial update of the type B rule in July 1994. All aspects of the 
    administrative process and the type B rule will be subject to review 
    during that update. During the biennial review, the Department will 
    consider ways of ensuring the greatest possible consistency between its 
    damage assessment regulations and the damage assessment regulations 
    being developed by NOAA.
        Further, the Department plans to publish a proposed rule to revise 
    the type A procedure for coastal and marine environments in compliance 
    with Colorado v. Interior in November 1994. The Department is also 
    developing an additional type A procedure for assessing damages in the 
    Great Lakes. Like the type A procedure for coastal and marine 
    environments, the type A procedure for the Great Lakes will incorporate 
    a computer model. The Department expects to publish a proposed rule for 
    the type A procedure for the Great Lakes in August 1994.
    
    II. Overview of This Final Rule
    
    A. Measure of Damages
    
        The type B rule as originally published on August 1, 1986, provided 
    that damages consisted of the lesser of the cost of restoring the 
    injured resources or the diminution in the value of the injured 
    resources without restoration. In Ohio v. Interior, the court ordered 
    the Department to revise the rule to reflect the statutory preference 
    for using restoration costs as the measure of natural resource damages. 
    CERCLA provides that sums recovered in natural resource damage actions 
    may be used to restore, rehabilitate, replace, or acquire the 
    equivalent of the injured natural resources. The court used the simple 
    term ``restoration'' costs as shorthand for the cost of performing any 
    of these actions. 880 F.2d at 441. In many cases, trustee officials 
    will likely use damage awards to fund some combination of these 
    actions, rather than only one. Therefore, the final rule allows trustee 
    officials to recover the costs of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources in all cases.
        The court recognized the Department's authority to establish
    
        * * * some class of cases where other considerations--i.e. 
    infeasibility of restoration or grossly disproportionate cost to use 
    value--warrant a [measure of damages other than the costs of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources]. Id. at 459.
    
    However, the Department believes that trustee officials will always 
    perform some, albeit occasionally minor, form of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources. Even in situations where natural recovery is the preferred 
    action, trustee officials will nonetheless incur some costs, such as 
    the expense of restricting public access or taking other actions to 
    ensure that natural recovery is not impeded. Therefore, the final rule 
    does not include any exceptions to the basic measure of damages. 
    Moreover, the rule also provides trustee officials with the discretion 
    to add to the basic measure of damages the value of the resource 
    services lost to the public from the date of the discharge or release 
    until restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources has been completed.
    
    B. Restoration and Compensation Determination Plan
    
        To assist trustee officials in developing claims under the new 
    measure of damages, the rule provides for the development of a 
    Restoration and Compensation Determination Plan. The Restoration and 
    Compensation Determination Plan replaces the Restoration Methodology 
    Plan discussed in the original version of the rule. The Restoration and 
    Compensation Determination Plan is designed to focus the scope of 
    Damage Determination. The Restoration and Compensation Determination 
    Plan is part of the overall Assessment Plan and, thus, subject to 
    public review and comment.
    1. Selection of a Restoration, Rehabilitation, Replacement, and/or 
    Acquisition Alternative
        Since damages are based on the costs of restoring, rehabilitating, 
    replacing, and/or acquiring the equivalent of the injured resources, 
    trustee officials need a mechanism for projecting these costs. The rule 
    includes a procedure for selecting a restoration, rehabilitation, 
    replacement, and/or acquisition alternative that can be used in this 
    projection.
        Under the rule, trustee officials first identify and consider a 
    reasonable number of possible alternatives for restoring, 
    rehabilitating, replacing, and/or acquiring the equivalent of the 
    injured resources. Trustee officials also estimate those services that 
    are likely to be lost to the public pending completion of each 
    alternative under consideration. Trustee officials then select one of 
    the possible alternatives. The rule lists factors that trustee 
    officials must consider during the selection. The relative weight of 
    these factors is left to the discretion of the trustee officials. 
    Trustee officials document their decisions in the Restoration and 
    Compensation Determination Plan.
    2. Calculation of the Costs of Restoration, Rehabilitation, 
    Replacement, and/or Acquisition of Equivalent Resources
        Once the trustee officials select a restoration, rehabilitation, 
    replacement, and/or acquisition alternative, they must choose the 
    methods they intend to use to estimate the costs of implementing that 
    alternative. To do this, trustee officials select among the specific 
    cost estimating methodologies provided in the rule. The rule provides a 
    number of criteria to guide the selection of cost estimating 
    methodologies, including a requirement that the chosen methodologies 
    are reliable for the particular incident and type of damage being 
    measured. Trustee officials include the rationale for their selection 
    in the Restoration and Compensation Determination Plan.
    3. Calculation of Compensable Value
        Under this rule, the costs of restoring, rehabilitating, replacing, 
    and/or acquiring the equivalent of the injured resources are the basic 
    measure of damages; however, these costs are only one component of the 
    damages that trustee officials may assess. Trustee officials also have 
    the discretion to assess the value of the services that the public lost 
    from the date of the release or discharge until completion of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources. The final rule uses the term ``compensable 
    value'' to encompass all of the lost public economic values, including 
    lost use values and lost nonuse values such as existence and bequest 
    values. The Restoration and Compensation Determination Plan includes a 
    description of the valuation methodologies trustee officials intend to 
    use when estimating compensable value during Damage Determination.
        a. Use values. The original type B rule provided a ranked list of 
    valuation methodologies that could be used to calculate lost use 
    values. If the market for the injured resource was ``reasonably 
    competitive,'' then the diminution of the market price attributable to 
    the discharge or release was used to estimate damages. If a market-
    price methodology was not available, then the trustee officials were 
    required to use appraisal methodologies. Only when neither market-price 
    nor appraisal methodologies were appropriate for the resources being 
    assessed did the original version of the rule allow trustee officials 
    to use non-market-based methodologies.
        The court ruled that the hierarchy of valuation methodologies 
    incorrectly established a strong presumption in favor of market-price 
    and appraisal methodologies. The proposed rule continued to rank 
    valuation methodologies according to reliability but allowed trustee 
    officials to use any of the methodologies whenever they wanted, 
    notwithstanding the ranking. In light of potential confusion over the 
    practical effect of the ranking in the absence of any restrictions on 
    trustee officials' selections, the Department has eliminated the 
    ranking from the final rule. The final rule leaves trustee officials 
    free to choose any of the specified valuation methodologies. The rule 
    provides a number of criteria to guide the selection of valuation 
    methodologies, including a requirement that the chosen methodologies 
    are reliable for the particular incident and type of damage being 
    measured. Trustee officials include the rationale for their selection 
    in the Restoration and Compensation Determination Plan.
        b. Nonuse values. Sections 11.83(b)(2) and 11.83(d)(5)(ii) of the 
    original version of the type B rule provided that lost nonuse values 
    could only be assessed if trustee officials could not determine any 
    lost use values. In the August 1, 1986, preamble to the original type B 
    rule, the Department provided the following explanation for this 
    restriction:
    
        Ordinarily, option and existence values would be added to use 
    values. However, section 301(c) of CERCLA mentions only use values. 
    Therefore, the primary emphasis in this section is on the estimation 
    of use values. 51 FR 27719.
    
        Ohio v. Interior held that the Department had ``erroneously 
    construed the statute,'' stating:
    
        [S]ection 301(c)(2) requires Interior to ``take into 
    consideration factors including, but not limited to * * * use 
    value.'' 42 U.S.C. Sec. 9651(c)(2) (emphasis added). The statute's 
    command is expressly not limited to use value; if anything, the 
    language implies that DOI is to include in its regulations other 
    factors in addition to use value. 880 F.2d at 464.
    
        The court went on to say that the Department--
    
        * * * is entitled to rank methodologies according to its view of 
    their reliability, but it cannot base its complete exclusion of 
    option and existence values on an incorrect reading of the statute. 
    Id.
    
    The court instructed the Department to consider a rule that would 
    permit trustee officials to include all reliably calculated lost values 
    in their damage assessments. Id.
        CV is currently the only method available for the express purpose 
    of estimating nonuse values. CV can also be used to calculate use 
    values. Under the original type B rule, CV was listed as a non-market-
    based methodology for calculating either lost use values or lost nonuse 
    values. Ohio v. Interior held that the Department's decision to include 
    CV as a best available procedure was not improper. Id. at 478. However, 
    the court did not require the Department to allow unlimited use of CV. 
    Moreover, the court did not address the difference between use of CV to 
    calculate lost use values and use of CV to calculate lost nonuse 
    values.
        The Department received numerous comments on the use of CV. These 
    comments focused on use of CV to estimate lost nonuse values rather 
    than lost use values. In the April 29, 1991, notice of proposed 
    rulemaking, the Department stated that ``[w]hen CVM is used to quantify 
    use values alone, it is judged to be just as reliable as the other 
    nonmarket valuation methodologies.'' 56 FR 19762. Commenters did not 
    dispute this assertion and have not provided any information to the 
    contrary, even though the Department specifically solicited ``reviews 
    of CVM that address its reliability for measuring use values'' in the 
    July 22, 1993, Federal Register notice. 58 FR 39329. Thus, this final 
    rule allows trustee officials to use CV to assess lost use values 
    subject only to the restrictions applicable to any of the listed 
    methodologies for assessing lost use values. However, during the 
    upcoming biennial review of the type B rule, the Department will 
    reconsider whether additional standards for the use of CV to estimate 
    lost use values are appropriate.
        Nonuse values, unlike use values, are not linked to behavior and, 
    thus, are more difficult to validate externally than use values. 
    Therefore, the Department will soon be issuing a proposed set of 
    standards to improve the reliability of CV when used to estimate lost 
    nonuse values. This final rule renumbers Secs. 11.83(b)(2) and 
    11.83(d)(5)(ii) of the original rule, which restrict the assessment of 
    lost nonuse values to cases where lost use values cannot be determined, 
    as new Secs. 11.83(c)(1)(iii) and 11.83(c)(2)(vii)(B), respectively. 
    However, pending completion of the rulemaking concerning assessment of 
    lost nonuse values, the Department is temporarily leaving unchanged the 
    language of renumbered Secs. 11.83(b)(2) and 11.83(d)(5)(ii), which was 
    remanded by Ohio v. Interior.
    
    C. Resources Covered by the Natural Resource Damage Assessment 
    Regulations
    
        The final issue remanded by Ohio v. Interior concerns the scope of 
    the resources covered by the rule. The rule as originally published 
    incorporated the statutory definition of ``natural resources.'' This 
    definition encompasses any resource--
    
        Belonging to, managed by, held in trust by, appertaining to, or 
    otherwise controlled by the United States * * *, any State or local 
    government, any foreign government, or any Indian tribe, or, if such 
    resources are subject to a trust restriction on alienation, any 
    member of an Indian tribe. CERCLA sec. 101(16).
    
        The court in Ohio v. Interior noted that, although CERCLA does not 
    authorize recovery of damages for injuries to purely private resources, 
    the statutory definition of ``natural resources'' is clearly not 
    limited to resources literally owned by a government. 880 F.2d at 460. 
    Similarly, in its oral argument in Ohio v. Interior, the Department 
    recognized that applicability of CERCLA's natural resource damage 
    provisions does not hinge solely on ownership. Id. at 461. However, the 
    August 1, 1986, preamble to the final type B rule stated that ``section 
    101(16) of CERCLA clearly indicates that privately owned natural 
    resources are not to be included in natural resource damage 
    assessments.'' 54 FR 27696. Therefore, the court asked the Department 
    to clarify whether the natural resource damage assessment regulations 
    may be used to assess damages for injuries to any resources that are 
    not owned by the government.
        The Department never intended to suggest that the applicability of 
    the regulations hinges solely on ownership of a resource by a 
    government entity. The rule is available for assessments of all natural 
    resources covered by CERCLA, which under the plain language of the 
    statute includes more than just resources owned by the government. 
    Section 11.14(z), which was not affected by this rulemaking, 
    incorporates the statutory definition of ``natural resource.'' The rule 
    does not interpret this statutory definition. This final rule does, 
    however, add a requirement that trustee officials prepare statements 
    explaining the bases for their assertions of trusteeship. This 
    statement must be included both in the Notice of Intent to Perform an 
    Assessment, which is sent to PRPs, and in the Assessment Plan, which is 
    subject to public review and comment.
    
    D. Other Significant Issues
    
        This final rule addresses two additional issues related to the 
    court order:
        (1) Development of a preliminary estimate of damages; and
        (2) The date of promulgation of the natural resource damage 
    assessment regulations.
    1. Preliminary Estimate of Damages
        Under Sec. 11.35 of the rule as originally published, the 
    determination of the appropriate measure of damages was made in the 
    Economic Methodology Determination. In the Economic Methodology 
    Determination, trustee officials were required to estimate both the 
    costs of restoring the injured resources and the diminution in the 
    value of the injured resources without restoration. The smaller value 
    served as the measure of damages. The Economic Methodology 
    Determination was then used to help trustee officials develop an 
    Assessment Plan.
        Under this final rule, damages always include the costs of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources. Therefore, the Department has eliminated the 
    Economic Methodology Determination. However, the Economic Methodology 
    Determination served a function that is still relevant under the 
    revised rule. CERCLA provides that trustee officials may recover the 
    costs of performing an assessment, but only if those costs are 
    reasonable. Under the definition of ``reasonable cost'' in 
    Sec. 11.14(ee), which was not affected by this rulemaking, the 
    anticipated cost of the assessment must be expected to be less than the 
    anticipated damage amount. Under the original rule, the damage 
    estimates developed during the Economic Methodology Determination 
    helped trustee officials design their Assessment Plans so that this 
    standard was met. In order to continue assisting trustee officials in 
    performing assessments at reasonable costs in the absence of the 
    Economic Methodology Determination, this final rule requires trustee 
    officials to prepare a preliminary estimate of damages before they 
    begin the development of an Assessment Plan.
    2. Date of Promulgation of the Natural Resource Damage Assessment 
    Regulations
        CERCLA provides that natural resource damage claims other than 
    those involving Federal facilities or sites on the National Priorities 
    List must be commenced by Federal and State trustee officials:
    
        * * * within 3 years after the later of the following:
        (A) The date of the discovery of the loss and its connection 
    with the release in question.
        (B) The date on which regulations are promulgated under section 
    301(c). CERCLA sec. 113(g)(1).
    
    Neither the language nor the legislative history of CERCLA defines the 
    date of promulgation of the natural resource damage assessment 
    regulations under section 301(c).
        There has been considerable confusion over this statutory provision 
    in the aftermath of Ohio v. Interior and Colorado v. Interior. The 
    natural resource damage assessment regulations are designed to 
    calculate a monetary damage figure for injuries to natural resources. 
    Ohio v. Interior and Colorado v. Interior remanded a fundamental issue, 
    namely the measure of damages. Until the court orders are fully 
    implemented, trustee officials are left without a complete procedure 
    for calculating damages consistent with the provisions of CERCLA. 
    Therefore, the Department has amended the rule to clarify that for the 
    purposes of section 113(g)(1) of CERCLA, the ``date on which 
    regulations are promulgated'' is the date on which final rules revising 
    both the type A rule and the type B rule in compliance with Ohio v. 
    Interior and Colorado v. Interior are published.
    
    III. Response to Comments
    
        The Department received numerous comments on the July 22, 1993, 
    Federal Register notice. The Department appreciates the time and effort 
    expended by the commenters. This notice does not address any of the 
    comments received concerning the use of CV to calculate lost nonuse 
    values. Those comments will be addressed in the Department's upcoming 
    notice of proposed rulemaking to revise the original language of the 
    type B rule concerning the assessment of nonuse values.
        With respect to comments outside the confines of the Ohio v. 
    Interior remand, the Department has for now simply reproduced guidance 
    provided in prior Federal Register notices and indicated that further 
    clarification is beyond the scope of this rulemaking. During the 
    upcoming biennial review, the Department will carefully consider all of 
    the comments submitted during this rulemaking that were beyond the 
    scope of the court remand. Commenters need not resubmit these comments 
    during the biennial review.
    
    A. General Comments Concerning this Rulemaking
    
    1. Scope of This Rulemaking
        Comment: Some commenters objected to the Department's decision to 
    defer consideration of certain issues until the next biennial review. 
    These commenters stated that all matters relating to the measure of 
    damages should be addressed in this rulemaking.
        Response: As was explained in the April 29, 1991, notice of 
    proposed rulemaking, the Department decided to limit this rulemaking to 
    the court order in light of the potentially wide-ranging issues that 
    will be considered during the biennial review. The Department believes 
    that it has considered all issues within the scope of the Ohio v. 
    Interior remand.
    2. Timing of This Rulemaking
        Comment: Several commenters expressed concern that the Department 
    was proceeding too slowly on implementation of Ohio v. Interior and 
    Colorado v. Interior and commencement of the biennial review.
        Response: Implementation of Ohio v. Interior and Colorado v. 
    Interior and commencement of the biennial review have involved 
    considerable, time-consuming analysis and coordination. The Department 
    has been proceeding, and will continue to proceed, as expeditiously as 
    possible.
    3. Goal of This Rulemaking
        Comment: One commenter stated that the Department had failed to 
    articulate clear goals for this rulemaking. This commenter offered 
    suggestions on possible goals, including promotion of timely, cost-
    effective restoration. Another commenter requested that the Department 
    attempt to eliminate ambiguity and vagueness from the rule in order to 
    reduce transaction costs.
        Response: Section 11.11, which was not affected by this rulemaking, 
    states that the purpose of the regulations is to provide standardized 
    and cost-effective procedures for assessing natural resource damages. 
    The Department has indicated that the primary goal of this particular 
    rulemaking is to revise the type B rule to comply with Ohio v. 
    Interior. The Department believes that promotion of timely, cost-
    effective restoration and elimination of ambiguity and vagueness are 
    worthy objectives and has attempted to further those objectives to the 
    extent possible within the context of addressing the court order. The 
    Department will consider whether additional revisions are necessary 
    during the upcoming biennial review.
    4. Regulatory Impact Analysis
        Comment: A few commenters disagreed with the Department's statement 
    that this rulemaking is not ``major'' under Executive Order 12291 and, 
    thus, does not require preparation of a Regulatory Impact Analysis. 
    These commenters challenged a number of aspects of the Determination of 
    Effects prepared for the proposed rule.
        Response: Executive Order 12291 has been rescinded since the 
    Department prepared the Determination of Effects for the proposed rule. 
    This final rule has been reviewed under Executive Order 12866 and has 
    been determined to constitute a significant regulatory action. However, 
    because of the difficulty of evaluating the effects of alternatives to 
    this rule, the Office of Information and Regulatory Affairs within the 
    Office of Management and Budget has waived preparation of the 
    assessments described in sections 6(a)(3)(B) and 6(a)(3)(C) of 
    Executive Order 12866 for the final rule.
    5. Status of Prior Unpublished Notice of Final Rulemaking
        Comment: A number of commenters objected to the publication of the 
    July 22, 1993, Federal Register notice on the ground that the 
    Department had already sent a notice of final rulemaking to the Office 
    of the Federal Register in January, 1993, that was never published.
        Response: The Department acknowledges that its former Assistant 
    Secretary-Policy, Management and Budget sent a notice of final 
    rulemaking to the Office of the Federal Register in January, 1993. The 
    Department retrieved the notice from the Office of the Federal Register 
    before it was filed out of concern that proper procedures had not been 
    followed in connection with its preparation. Most notably, the notice 
    improperly referred to and relied upon information received outside the 
    comment period and had not received proper Departmental clearance. The 
    Department, therefore, believes it was appropriate to retrieve the 
    notice and publish the July 22, 1993, Federal Register notice to reopen 
    the comment period.
    
    B. Overall Damage Assessment Process
    
    1. Trustee Discretion
        Comment: A number of commenters addressed the level of discretion 
    that the proposed rule would afford trustee officials. Many commenters 
    thought that trustee officials are in the best position to determine 
    how to proceed at a specific site and praised the flexibility of the 
    proposed rule. On the other hand, several commenters thought that the 
    rule would delegate too much authority to trustee officials. These 
    commenters stated that the language and legislative history of section 
    301(c) of CERCLA, through reference to ``protocols,'' ``best available 
    procedures,'' and ``most accurate and efficient procedures,'' require 
    that the Department develop substantive objective standards. According 
    to these commenters, the proposed rule relies upon subjective standards 
    that will lead to arbitrary and capricious results. These commenters 
    expressed concern that the Department was placing too much reliance on 
    public review and comment to curb potential abuses of discretion by 
    trustee officials.
        Response: The Department believes the rule appropriately balances 
    the need for objective procedures against the need for flexibility. In 
    order to comply with the statutory requirement to identify best 
    available procedures for assessing natural resource damages, the 
    Department has developed a detailed, standardized process that 
    incorporates a specific range of acceptable alternative methodologies. 
    However, the type B rule was also intended to have broad application. 
    Natural resource damage cases range from situations involving discrete 
    injury of one resource caused by a small, incidental release of a 
    single substance to incidents involving extensive injury of multiple 
    resources caused by large, long-term releases of mixtures of 
    substances. In light of the myriad of possible natural resource damage 
    scenarios, a type B rule that mandates a particular course of action at 
    each stage of every assessment would generally be unusable or result in 
    unreasonable assessment costs. Therefore, in certain areas the rule 
    allows trustee officials to use their best judgment.
        Although trustee officials do have some discretion, the rule 
    imposes a number of checks on that discretion. The rule requires 
    trustee officials to document the rationale for their decisions. The 
    rule also provides an opportunity for public comment and review of 
    trustee officials' actions, which the Department believes will ensure a 
    significant level of accountability for trustee officials. Also, the 
    Department notes that all decisions made by trustee officials will 
    ultimately be reviewable in court. Therefore, the rule includes 
    criteria by which courts can evaluate trustee decisions.
    2. Public and PRP Involvement
        Comment: Several commenters voiced opinions about the opportunity 
    for PRP and public participation in the assessment process. Some 
    commenters stated that the proposed rule would provide an appropriate 
    level of public and PRP participation. Other commenters thought that 
    the Department should encourage earlier involvement of PRPs to 
    encourage settlement and avoid duplication of effort. A few commenters 
    suggested that the rule be revised to clarify that trustee officials 
    are authorized to allow PRPs to conduct assessment work.
        Response: This final rule does not affect the level or timing of 
    PRP or public participation in the natural resource damage assessment 
    process. The Department agrees that early participation of PRPs in the 
    assessment process promotes amicable settlement of natural resource 
    damage claims but does not think that any revisions of the rule are 
    necessary in this regard.
        Section 11.32(d) already provides trustee officials with the 
    discretion to allow PRPs to conduct assessment work. However, as was 
    stated in the August 1, 1986, preamble:
    
        The Department's intention has always been that the decision to 
    allow or not to allow potentially responsible parties to participate 
    in the implementation of the Assessment Plan should rest solely with 
    the authorized official, or the lead authorized official, when 
    appropriate.
        Furthermore, a decision to allow such participation should only 
    be made when the authorized official believes that a fair and 
    accurate damage assessment will result from the potentially 
    responsible party's participation and will be ensured through 
    adequate direction, guidance, and monitoring by the authorized 
    official * * *. The Department emphasizes that any and all actions 
    taken by potentially responsible parties to implement an Assessment 
    Plan occur under the ultimate approval and authority of the 
    authorized official acting as trustee. The potentially responsible 
    party functions in a strictly ministerial role. The final choice of 
    methodologies rests solely with the authorized official. 51 FR 
    27704.
    
    Further clarification is beyond the scope of this rulemaking.
    3. Separate Assessments for Each Injury
        Comment: Some commenters stated that the rule should encourage 
    trustee officials to perform separate assessments for each injury in 
    order to facilitate settlement.
        Response: Natural resources are generally highly interdependent. 
    The selection of methods to address one injured resource will often 
    affect the selection of methods to address other resources. Therefore, 
    the rule leaves it to the discretion of the trustee officials whether 
    separate assessments should be conducted for each injury. Further 
    clarification is beyond the scope of this rulemaking.
    4. Focus of Assessments
        Comment: Some commenters stated that the Department should take 
    precautions to ensure that trustee officials do not undertake 
    unnecessary basic research when performing damage assessments. These 
    commenters suggested that the Department provide a list of sources of 
    existing scientific data and prohibit trustee officials from performing 
    new research unless there are no existing data regarding the effect of 
    the particular substance on the particular natural resources involved.
        Response: As was noted in the August 1, 1986, preamble to the 
    original type B rule:
    
        General research studies are not compensable under a damage 
    assessment performed pursuant to this rule, since it is 
    inappropriate that experimental research studies to advance general 
    scientific understanding be included as a part of a specific natural 
    resource damage claim. 51 FR 27710.
    
    Further clarification is beyond the scope of this rulemaking.
    
    C. Resources Covered by the Natural Resource Damage Assessment 
    Regulations
    
        Comment: There were numerous comments on the issue of the resources 
    covered by the natural resource damage assessment regulations. Several 
    commenters supported the Department's proposal not to define which 
    privately owned resources are covered by the regulations. These 
    commenters stated that the question of whether a particular resource is 
    covered by the regulations is governed by a wide variety of Federal, 
    State, local, and tribal laws that are constantly evolving. These 
    commenters further stated that trustee officials are the most familiar 
    with these laws and, therefore, are in the best position to determine 
    whether a particular resource is covered by the regulations.
        On the other hand, several commenters thought that the regulations 
    should include some limits on the assessment of damages for injuries of 
    privately owned resources in order to avoid overly broad claims and 
    unnecessary litigation. Some of these commenters stated that the 
    Department had misinterpreted Ohio v. Interior and that the court did 
    ask the Department to clarify which privately owned resources are 
    covered by the regulations.
        Response: The Department believes that the Ohio v. Interior court 
    did not require or even request the Department to define precisely 
    which privately owned resources are covered by the natural resource 
    damage assessment regulations. The court merely asked for clarification 
    of whether the Department intended the regulations to cover any non-
    government-owned resources.
        The scope of resources covered by the natural resource damage 
    assessment regulations is determined by section 101(16) of CERCLA, 
    which defines ``natural resources'' as:
    
        [L]and, fish, wildlife, biota, air, water, ground water, 
    drinking water supplies, and other such resources belonging to, 
    managed by, held in trust by, appertaining to, or otherwise 
    controlled by the United States * * *, any State or local 
    government, any foreign government, any Indian tribe, or, if such 
    resources are subject to a trust restriction on alienation, any 
    member of an Indian tribe.
    
    As the court noted, this definition, which is incorporated into 
    Sec. 11.14(z) of the rule, extends beyond resources that are actually 
    owned by the government.
        Use of the natural resource damage assessment regulations is not 
    restricted to government-owned resources. Trustee officials can use the 
    regulations to assess damages for all natural resources covered by 
    CERCLA. The Department believes that no additional action is needed to 
    comply with the court order.
        Not only is development of a definition of the privately owned 
    resources covered by the regulations not required by Ohio v. Interior, 
    it is also impractical. The question of whether a trustee official can 
    assess damages for a particular natural resource is governed by CERCLA. 
    However, CERCLA provides that trustee officials can only recover 
    damages for injuries to those resources that are related to them 
    through ownership, management, trust, or control. These relationships 
    are created by other Federal, State, local, and tribal laws. In light 
    of the diversity of these other laws, the Department believes that the 
    determination of whether a particular privately owned resource 
    constitutes a natural resource under CERCLA is best addressed on a 
    case-by-case basis.
        The Department disagrees that lack of a definition of the privately 
    owned resources covered by the regulations will result in overly broad 
    claims and unnecessary litigation. This final rule requires a trustee 
    official to prepare a statement explaining the basis for his or her 
    assertion of trusteeship. This statement must be included both in the 
    Notice of Intent to Perform an Assessment, which is sent to PRPs, and 
    in the Assessment Plan, which is subject to public review and comment. 
    These opportunities for early input from PRPs and the public provide 
    both a check on the trustee officials' discretion and a means of 
    resolving disputes prior to litigation. Other provisions of the 
    regulations, such as the requirement that only committed public uses of 
    resources be included in compensable value, provide additional 
    protection against improper assertions of authority over private 
    property.
        Comment: There were also many comments on the Department's proposal 
    to clarify that a trustee official's statement of his or her basis of 
    authority is not entitled to a rebuttable presumption. Several 
    commenters supported this proposal. These commenters noted that a 
    trustee official's basis of authority is an issue of legal standing to 
    sue rather than an issue of assessment of damages. These commenters 
    also stated that it was particularly appropriate not to grant a 
    rebuttable presumption to a trustee official's statement since the rule 
    contained no standards for determining which privately owned resources 
    are covered by this rule.
        On the other hand, a number of commenters thought that the 
    rebuttable presumption should apply to a trustee official's statement 
    of his or her basis of authority. These commenters stated that one of 
    the first steps that a trustee official takes in an assessment is the 
    determination of whether the affected resources fall under his or her 
    trusteeship. These commenters noted that nothing in CERCLA indicates 
    that this rule should restrict the rebuttable presumption to certain 
    aspects of an assessment.
        Response: In light of the fact that the Department has decided not 
    to provide guidance on the scope of resources covered by the 
    regulations, the Department does not believe that a trustee official's 
    statement of authority should be given a rebuttable presumption. 
    Section 11.31(a)(2) has been revised to clarify this point.
        Comment: One commenter noted that in the July 22, 1993, Federal 
    Register notice, the Department referred to the ``Federal, State, 
    local, and tribal laws'' that give rise to trusteeship. The commenter 
    sought clarification of whether local governments could bring natural 
    resource damage claims and whether States could bring natural resource 
    damage claims on behalf of local governments.
        Response: The Department refers to local laws that may give rise to 
    trusteeship because the statutory definition of ``natural resource'' 
    mentions resources belonging to, managed by, held in trust by, 
    appertaining to, or otherwise controlled by any local government. This 
    rule does not address local governments' standing to sue for natural 
    resource damages. However, at least one court has held that a local 
    government could not bring a natural resource damage claim, relying in 
    part on State law. Werlein v. United States, 746 F. Supp. 887, 910 (D. 
    Minn. 1990). Ohio v. Interior states that CERCLA allows State trustee 
    officials to recover damages for injured resources owned by, managed 
    by, appertaining to, or otherwise controlled by a local government. 880 
    F.2d at 460 n. 43.
        Comment: Some commenters requested that the rule be revised to 
    require trustee officials to provide detailed statements of authority.
        Response: The Department believes that a trustee official's 
    statement of authority, like all statements required under the 
    regulations, should be detailed enough to provide PRPs, other trustee 
    officials, the general public, any other interested parties, and 
    ultimately the courts with an adequate opportunity to evaluate the 
    statement. The level of detail may vary depending on the resources 
    involved. The Department does not believe that any revision of the rule 
    is necessary.
        Comment: A few commenters had questions about the application of 
    the rule to specific resources. One commenter asked the Department to 
    clarify that a tribal trustee official has authority to assert claims 
    for natural resource damages no matter where the natural resources are 
    located so long as the trustee official can establish trusteeship.
        Response: Nothing in these regulations prevents a Federal, State, 
    or tribal trustee official from assessing damages for injuries to any 
    natural resources, regardless of their location, so long as the trustee 
    official can establish trusteeship over the resource.
        Comment: Other commenters raised questions about the Department's 
    discussion of cultural and archaeological resources. Some commenters 
    disagreed with the Department's statement that cultural and 
    archaeological resources do not constitute natural resources under 
    CERCLA. Other commenters agreed that such resources are not natural 
    resources. However, these commenters disagreed with the Department's 
    statement that trustee officials are allowed to factor the loss of 
    archaeological and cultural attributes of a natural resource into a 
    natural resource damage assessment through consideration of the loss of 
    services provided by that natural resource. These commenters stated 
    that consideration of archaeological and cultural services provided by 
    a natural resource was tantamount to treating archaeological and 
    cultural resources as natural resources in violation of the statute. 
    One commenter requested that the Department clarify that an injury to 
    an archaeological or cultural resource in and of itself is not a basis 
    for a natural resource damage claim.
        Response: As was explained in the July 22, 1993, Federal Register 
    notice, the Department acknowledges the confusion that has arisen as a 
    result of multiple uses and meanings of the term ``resource'' under 
    different statutes. ``Archaeological'' and other ``cultural'' resources 
    are not ``land, fish, wildlife, biota, air, water, ground water, 
    drinking water supplies, [or] other such resources.'' Therefore, 
    ``archaeological'' and ``cultural'' resources do not constitute 
    ``natural'' resources under CERCLA.
        Nevertheless, although archaeological and cultural resources, as 
    defined in other statutes, are not treated as ``natural'' resources 
    under CERCLA, the rule does allow trustee officials to include the loss 
    of archaeological and other cultural services provided by a natural 
    resource in a natural resource damage assessment. For example, if land 
    constituting a CERCLA-defined natural resource contains archaeological 
    artifacts, then that land might provide the service of supporting 
    archaeological research. If an injury to the land causes a reduction in 
    the level of service (archaeological research) that could be performed, 
    trustee officials could recover damages for the lost service. Further 
    clarification is beyond the scope of this rulemaking.
    
    D. Trustee Coordination
    
        Comment: There were several comments concerning trustee 
    coordination. A number of commenters wrote in support of the trustee 
    coordination provisions in the rule. A few commenters thought that the 
    rule should place greater emphasis on trustee coordination and provide 
    additional guidance on how trustee officials can coordinate most 
    effectively.
        Response: Trustee coordination is discussed in Sec. 11.32(a)(1), 
    which was not affected by this rulemaking. Further clarification is 
    beyond the scope of this rulemaking.
        Comment: Several commenters raised questions about designation of a 
    lead authorized official. Some commenters asked the Department to 
    revise Sec. 11.32(a)(1)(ii)(A) to prohibit an official from an agency 
    that is both a trustee and a PRP from being designated as the lead 
    authorized official. Another commenter stated that the lead authorized 
    official should be selected on a case-by-case basis according to which 
    agency has the greatest interests at stake.
        Response: Revision of the procedures for appointing a lead 
    authorized official contained in Sec. 11.32(a)(1)(ii)(A) is beyond the 
    scope of this rulemaking.
        Comment: One commenter questioned why the Department had raised the 
    issue of collateral estoppel in the July 22, 1993, Federal Register 
    notice.
        Response: The Department referred to collateral estoppel in 
    response to a comment. The commenter thought that requiring Federal 
    trustee officials to use the natural resource damage assessment 
    regulations would eliminate collateral estoppel problems. The 
    Department responded that revising the optional nature of the 
    regulations was beyond the scope of this rulemaking and, moreover, 
    would not necessarily resolve potential collateral estoppel problems.
    
    E. Preliminary Estimate of Damages
    
        Comment: The commenters who addressed the issue of the preliminary 
    estimate of damages agreed that an estimate of damages is needed to 
    determine the proper scope of an assessment and to ensure the 
    reasonableness of assessment costs. Several commenters thought that 
    trustee officials should be required to disclose the preliminary 
    estimate as soon as possible to ensure that the public and the PRPs 
    have an opportunity to comment on the reasonableness of projected 
    assessment costs. One commenter stated that trustee officials should be 
    required to consult with the PRPs when developing the preliminary 
    estimate.
        Response: The Department believes that premature disclosure of the 
    preliminary estimate might adversely affect the ability of trustee 
    officials to settle or litigate a natural resource damage case. 
    Therefore, the Department has revised the language of proposed 
    Sec. 11.35(d)(3) to clarify that trustee officials need not disclose 
    the preliminary estimate until the assessment has been completed.
        Even though the preliminary estimate is not disclosed until the end 
    of the assessment, PRPs and the general public will still have a 
    meaningful opportunity to comment on the reasonableness of assessment 
    costs. Under Sec. 11.14(ee), which was not affected by this rulemaking, 
    the relationship between anticipated damages and anticipated assessment 
    costs is only one factor of reasonable costs. Another factor is whether 
    all aspects of the assessment directly contribute to the calculation of 
    a monetary damage figure. The public and the PRPs need not know the 
    preliminary estimate of damages to comment on whether an assessment 
    satisfies this factor of reasonableness. Moreover, after the assessment 
    has been completed, trustee officials are required to include the 
    preliminary estimate in the Report of Assessment, which will allow PRPs 
    and courts to evaluate whether anticipated damages exceeded anticipated 
    assessment costs.
        Nothing in the rule prevents trustee officials from consulting with 
    PRPs during the development of the preliminary estimate. However, the 
    Department believes that requiring trustee officials to do so could 
    adversely affect their ability to settle or litigate their claims.
        Comment: Some commenters thought that the preliminary estimate 
    should always be completed before publication of the Assessment Plan. 
    Other commenters thought that the Department should provide additional 
    guidance on when delay of preparation of a preliminary estimate would 
    be warranted.
        Response: The Department acknowledges the importance of the 
    preliminary estimate in ensuring that the Assessment Plan is 
    appropriately focused. However, the Department believes that trustee 
    officials should have discretion to delay completion of the preliminary 
    estimate until the end of Injury Determination if insufficient data 
    exist upon which to base an estimate. The Department realizes that in 
    some cases the injuries might be so complex or the existing data might 
    be so sparse that any preliminary estimate of damages would be 
    meaningless until Injury Determination is complete. The Department does 
    not believe that additional guidance on this topic is needed.
        Comment: A few commenters suggested that trustee officials be 
    allowed to develop a range of preliminary estimates rather than one 
    specific estimate. These commenters expressed concern that if required 
    to develop a specific number, trustee officials would be likely to 
    develop a high preliminary estimate, which would then encourage them to 
    find damages at least as high as the preliminary estimate, regardless 
    of the actual damages.
        Response: The Department does not think that a range of preliminary 
    estimates would provide an adequate standard for evaluating whether 
    assessment costs are reasonable. Also, the Department does not believe 
    that development of a specific preliminary estimate will encourage 
    trustee officials to develop exaggerated damage claims, particularly 
    since the preliminary estimate of damages may be revised as new 
    information becomes available.
    
    F. Reasonable Cost of an Assessment
    
        Comment: A number of commenters expressed support for the existing 
    definition of ``reasonable cost.'' However, other commenters thought 
    that the definition should be revised so that the reasonableness of 
    assessment costs is determined by comparing the cost of each component 
    of the assessment to the anticipated damages to be determined by that 
    component.
        Response: The definition of ``reasonable cost'' contained in 
    Sec. 11.14(ee) was upheld in Ohio v. Interior after thorough review. 
    Revision of the definition is beyond the scope of this rulemaking.
        Comment: A few commenters suggested that the Department add a list 
    of specific practices that would render assessment costs unreasonable.
        Response: Section 11.15(a)(3) of the rule specifies different types 
    of expenses that constitute reasonable costs of an assessment. The only 
    revision to Sec. 11.15(a)(3) that is being made in this rulemaking is a 
    substitution of the phrase ``restoration'' with the phrase 
    ``restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources.'' Additional changes to Sec. 11.15(a)(3) are 
    beyond the scope of this rulemaking.
        Comment: One commenter expressed concern that trustee officials 
    might sacrifice scientific accuracy in order to meet the standards of 
    reasonable cost.
        Response: The Department believes that the rule adequately ensures 
    scientific accuracy. Also, as discussed above, the definition of 
    ``reasonable cost'' contained in Sec. 11.14(ee) was upheld in Ohio v. 
    Interior after thorough review.
        Comment: Some commenters stated that reasonable assessment costs 
    should include attorneys' fees. A few commenters thought that if 
    attorneys' fees were included as recoverable assessment costs, then the 
    Department should clarify that trustee officials may recover only those 
    attorneys' fees necessary for the assessment not those related to 
    preparation and litigation of a natural resource damage claim. One 
    commenter expressed confusion about what the Department meant when it 
    stated in the July 22, 1993, Federal Register notice that trustee 
    officials may recover only those costs that are associated with the 
    actual assessment.
        Response: As noted in the August 1, 1986, and the July 22, 1993, 
    Federal Register notices, the Department believes that trustee 
    officials will generally need the assistance of an interdisciplinary 
    team of experts when performing natural resource damage assessments. 
    The rule does not restrict recoverable assessment costs to the expenses 
    of particular types of professionals. Section 11.60(d)(2), which was 
    not affected by this rulemaking, provides that recoverable assessment 
    costs are ``limited to those costs incurred or anticipated by the 
    authorized official for, and specifically allocable to, site specific 
    efforts taken in the assessment of damages.'' Therefore, if attorneys 
    are involved in work specifically allocable to an assessment, the 
    resulting attorneys' fees are recoverable as assessment costs under the 
    rule. The rule does not address the recovery of attorneys' fees 
    incurred in litigation over the results of the damage assessment, as 
    opposed to those incurred during the assessment itself.
    
    G. Calculation of Baseline
    
        Comment: There were a variety of comments about the calculation of 
    baseline. A number of commenters supported the Department's proposal to 
    revise Sec. 11.82(b)(1)(i) to clarify that baseline represents the 
    conditions that would have existed had the release or discharge not 
    occurred rather than the conditions that existed prior to the discharge 
    or release.
        Response: As noted in the July 22, 1993, Federal Register notice, 
    the definition of baseline, which was not affected by this rulemaking, 
    is set forth at Sec. 11.14(e):
    
        Baseline means the condition or conditions that would have 
    existed at the assessment area had the discharge of oil or the 
    release of the hazardous substance under investigation not occurred.
    
    Section 11.82(b)(1)(i) of the proposed rule inadvertently described 
    restoration and rehabilitation actions as actions taken to return a 
    resource to baseline as measured by ``the services previously 
    provided.'' Section 11.82(b)(1)(i) of the final rule has been revised 
    to conform with the definition in Sec. 11.14(e).
        Comment: A number of commenters sought additional guidance on how 
    to determine baseline in industrial areas, particularly how to 
    distinguish the effects of the release or discharge in question from 
    the effects of other conditions.
        Response: Sections 11.72(c) through (k), which were not affected by 
    this rulemaking, provide considerable guidance on the calculation of 
    baseline. Additional clarification is beyond the scope of this 
    rulemaking.
        Comment: There were a few comments about the discussion in the July 
    22, 1993, Federal Register notice concerning the appropriate baseline 
    for a river that in addition to being injured by a hazardous substance 
    release also regularly receives sewer overflows that do not constitute 
    hazardous substance releases under CERCLA. Some commenters noted that 
    the Department stated that the effects of the sewer overflows did not 
    render restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources pointless but did affect the baseline condition 
    that must be reestablished. These commenters sought additional 
    clarification that PRPs could not be held liable for the cost of 
    restoring, rehabilitating, replacing, and/or acquiring fish if the 
    sewer overflows would kill any stocked fish.
        Response: Baseline conditions are those that would have existed had 
    the release or discharge in question not occurred. In the hypothetical 
    case offered by the commenters, PRPs' liability for stocking fish 
    depends on whether fish would have existed in the river but for the 
    release in question. If fish would not survive in the river regardless 
    of whether the release had occurred, then PRPs would not be liable for 
    the cost of stocking fish.
    
    H. Measure of Damages
    
        Comment: There were a number of comments on the proposed measure of 
    damages. Several commenters supported the proposal to allow trustee 
    officials to recover compensable value in addition to restoration, 
    rehabilitation, replacement, and/or acquisition costs. However, many 
    others thought that allowing recovery of compensable value in addition 
    to restoration, rehabilitation, replacement, and/or acquisition costs 
    violated the Ohio v. Interior holding that restoration costs are the 
    preferred measure of damages. These commenters stated that compensable 
    value should only be recovered when restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources is infeasible 
    or poses grossly disproportionate costs.
        Response: The Department believes that providing trustee officials 
    with the discretion to assess compensable value is consistent with the 
    holding in Ohio v. Interior because it will help ensure that the public 
    is more fully compensated for injuries to natural resources. Ohio v. 
    Interior did hold that restoration costs are the preferred measure of 
    damages. However, nothing in the decision prohibits the Department from 
    allowing trustee officials to assess compensable values in addition to 
    restoration, rehabilitation, replacement, and/or acquisition costs. In 
    fact, the court explicitly stated that ``Congress intended the damage 
    assessment regulations to capture fully all aspects of loss.'' 880 F.2d 
    at 463. Further, even under Sec. 11.81(b) of the original rule, claims 
    based on restoration costs could include damages for diminution of use 
    values during the recovery period.
        Comment: Some commenters stated that even if the Department decides 
    to allow assessment of compensable value for CERCLA claims, it should 
    not allow assessment of compensable value for CWA claims. These 
    commenters stated that unlike section 107(a)(C) of CERCLA, which 
    imposes liability for ``damages for injury to, destruction of, or loss 
    of natural resources,'' section 311(f)(4) of CWA merely refers to the 
    ``costs of removal,'' which include ``any costs incurred by the Federal 
    government or any State government in the restoration or replacement of 
    natural resources.'' Furthermore, these commenters stated that nothing 
    in the legislative history of CWA suggests that lost use values were 
    intended to be recoverable.
        Response: Although the specific issue raised by these commenters 
    was not remanded by Ohio v. Interior and is not within the scope of 
    this rulemaking, the Department believes that compensable values are 
    recoverable under CWA. CWA provides that damages ``shall include any 
    costs or expenses incurred by the Federal government or any State 
    government in the restoration or replacement of natural resources 
    damaged or destroyed.'' CWA sec. 311(f)(4). Similarly, CERCLA provides 
    that damages ``shall not be limited by the sums which can be used to 
    restore or replace such resources.'' CERCLA sec. 107(f)(1). The court 
    in Ohio v. Interior compared these two provisions and concluded:
    
        These directives are in harmony: restoration is the basic 
    measure of damages, but damages can exceed restoration cost in some 
    cases. 880 F.2d at 450.
    
        Comment: Several commenters stated that CERCLA, Ohio v. Interior, 
    and Commonwealth of Puerto Rico v. SS Zoe Colocotroni, 628 F.2d 652 
    (1st Cir. 1980), cert. denied, 450 U.S. 912 (1981) (Puerto Rico v. SS 
    Zoe Colocotroni), require inclusion of an exception from the basic 
    measure of damages when restoration, rehabilitation, replacement, and/
    or acquisition costs are grossly disproportionate to the lost value of 
    the resource. A number of these commenters disagreed with the 
    Department's statements in the July 22, 1993, Federal Register notice 
    that no exceptions were needed because some form of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    will always be performed.
        One commenter questioned the Department's statement in the July 22, 
    1993, Federal Register notice that consideration of the factors set 
    forth in proposed Sec. 11.83(a)(3) would ensure that trustee officials 
    do not select inappropriate restoration, rehabilitation, replacement, 
    and/or acquisition alternatives. This commenter observed that proposed 
    Sec. 11.83(a)(3) addresses selection of cost estimating and valuation 
    methodologies rather than selection of a restoration, rehabilitation, 
    replacement, and/or acquisition alternative.
        A number of other commenters opposed the creation of an exception 
    for grossly disproportionate restoration, rehabilitation, replacement, 
    and/or acquisition costs. Some of these commenters urged the Department 
    to use caution if such an exception were adopted. One commenter 
    requested that the Department bear in mind the special spiritual and 
    cultural significance of natural resources to Indian tribes when 
    developing any such exception. Other commenters urged the Department to 
    base any such exception on a comparison of restoration, rehabilitation, 
    replacement, and/or acquisition costs to the total value of the 
    resources in question rather than the values of the resources lost as a 
    result of the injuries.
        Response: The Department believes it is not necessary to create an 
    exclusion from the basic measure of damages when restoration, 
    rehabilitation, replacement, and/or acquisition costs are grossly 
    disproportionate to the lost value of the injured resources. The 
    Department agrees that when trustee officials evaluate a particular 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative, they should consider the relationship between the costs of 
    implementing that alternative and the lost value of the resource. 
    However, if the costs of implementing a particular alternative do 
    greatly exceed the lost value of the resource, trustee officials need 
    not eliminate restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources as a basis for damages but should 
    instead select a less costly method of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources. Therefore, 
    Sec. 11.83(a)(3) provides a number of factors for trustee officials to 
    consider when selecting a restoration, rehabilitation, replacement, 
    and/or acquisition alternative. These factors, when considered 
    together, protect against the selection of an alternative that poses 
    grossly disproportionate costs.
        As noted in the July 22, 1993, Federal Register notice, the 
    Department does not agree that CERCLA, Ohio v. Interior, or Puerto Rico 
    v. SS Zoe Colocotroni mandate an exclusion from the basic measure of 
    damages when restoration, rehabilitation, replacement, and/or 
    acquisition costs are grossly disproportionate to the lost value of the 
    injured resources. CERCLA and Ohio v. Interior grant the Department the 
    discretion to develop exceptions to the basic measure of damages but do 
    not require such exceptions. Puerto Rico v. SS Zoe Colocotroni arose 
    under a Puerto Rican statute, and although the case does contain dicta 
    concerning CWA, it did not establish any standards for damages under 
    either CWA or CERCLA.
        Furthermore, Puerto Rico v. SS Zoe Colocotroni focused on whether 
    damages should be based on the costs of implementing a plan to dig up 
    and replant an oiled mangrove forest instead of relying upon natural 
    recovery. The court rejected the plan as ``impractical, inordinately 
    expensive, and unjustifiably dangerous to the healthy mangroves and 
    marine animals still present in the area to be restored.'' 628 F.2d at 
    676.
        This rule neither requires nor authorizes trustee officials to 
    pursue intensive activities to restore or rehabilitate an injured 
    resource if such activities would be impractical, inordinately 
    expensive, and unjustifiably dangerous. Under the rule, trustee 
    officials evaluate a range of alternatives, including an alternative 
    based on natural recovery, under a set of factors, including technical 
    feasibility, cost-benefit considerations, cost-effectiveness, and 
    potential for additional injury. The rule allows trustee officials to 
    rely upon natural recovery when appropriate. If trustee officials 
    decide to rely on natural recovery, they will still incur restoration, 
    rehabilitation, replacement, and/or acquisition costs because they will 
    take some sort of action, such as restricting public access or 
    monitoring, to ensure that natural recovery is not impeded.
        In the July 22, 1993, Federal Register notice, the Department 
    inadvertently stated that consideration of the factors set forth in 
    proposed Sec. 11.83(a)(3) would ensure that trustee officials do not 
    select a restoration, rehabilitation, replacement, and/or acquisition 
    alternative that poses grossly disproportionate costs. Section 
    11.83(a)(3) of the rule addresses selection of cost estimating and 
    valuation methodologies rather than selection of a restoration, 
    rehabilitation, replacement, and/or acquisition alternative. The 
    Department meant to reference the factors set forth in Sec. 11.82(d).
        Comment: Some commenters agreed with the Department's proposal to 
    allow trustee officials to base damages solely on restoration, 
    rehabilitation, replacement, and/or acquisition costs when there is no 
    acceptable methodology for calculating compensable value at a 
    reasonable cost. One commenter, however, urged the Department to 
    clarify that when trustee officials choose to base damages solely on 
    restoration, rehabilitation, replacement, and/or acquisition costs, 
    PRPs should not be allowed to challenge these costs based on their 
    unilateral calculation of compensable values.
        Response: The Department has decided that a trustee official should 
    have the discretion to base damages solely on the cost of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    not only when compensable value cannot be calculated at a reasonable 
    cost but whenever the trustee official deems it appropriate. The 
    Department has revised the language of Sec. 11.80(b) accordingly. The 
    rule provides that it is within the trustee official's discretion 
    whether to base damages solely on restoration, rehabilitation, 
    replacement, and/or acquisition costs; therefore, PRPs will not be able 
    to use a unilateral calculation of compensable value to challenge a 
    damage claim based solely on restoration, rehabilitation, replacement, 
    and/or acquisition costs.
    
    I. Restoration, Rehabilitation, Replacement, and/or Acquisition of 
    Equivalent Services Versus Resources
    
        Comment: Despite the Department's attempts to clarify the issue in 
    the July 22, 1993, Federal Register notice, commenters expressed 
    continued confusion over whether the Department intended restoration, 
    rehabilitation, replacement, and/or acquisition of the equivalent to 
    focus on the resource itself, the services provided by a resource, or 
    both. Several commenters continued to think that the rule dealt 
    inconsistently with this issue.
        Some commenters thought that the Department should specify that 
    damages are based on the cost of restoring, rehabilitating, replacing, 
    and/or acquiring the equivalent of both the services provided by a 
    resource and the resource itself. These commenters objected to the 
    Department's statements that service levels provide a means of 
    measuring restoration, rehabilitation, replacement, and/or acquisition 
    of equivalent resources. These commenters expressed concern that using 
    services alone as a measurement would result in less than complete 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources because the loss of potential services might be 
    left unaddressed.
        A few commenters offered an example of a groundwater drinking 
    supply that previously contained hazardous substances at concentrations 
    significantly better than required by drinking water standards. The 
    commenters noted that if service levels are used to measure 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources, then treating the groundwater to the point at 
    which it meets drinking water standards might be deemed full 
    restoration, rehabilitation, replacement, and/or acquisition but would 
    fail to make the public whole. These commenters further stated that 
    failure to account for potential services when measuring restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    would violate Ohio v. Interior, which stated that ``a trustee is not 
    prohibited from recovering costs of restoring or replacing a natural 
    resource even when that resource has no documented `committed use.''' 
    880 F.2d at 462.
        Other commenters stated that service levels should not be viewed 
    simply as a yardstick for, but rather as the very focus of, 
    restoration, rehabilitation, replacement, and/or acquisition. These 
    commenters thought that unless reestablishment of baseline service 
    levels were used as the standard for restoration, rehabilitation, 
    replacement, and/or acquisition, PRPs would be required to pay to 
    replicate the exact natural resources that were injured, contrary to 
    congressional intent. These commenters requested that the Department 
    state explicitly that the actual injury need not be corrected if 
    services can be restored through other means. Some commenters offered 
    an example of contaminated sediment that destroys vegetation. These 
    commenters stated that dredging should not be required if the 
    vegetation can be restored through reseeding or fertilization.
        A number of commenters also objected to the Department's statement 
    that Congress did not intend to allow trustee officials to simply 
    restore the abstract services provided by a resource through an 
    artificial mechanism. Some commenters asked the Department to clarify 
    that its concern lies with creation of an artificial resource rather 
    than use of a manufactured device to restore the injured resource.
        Response: As noted in the July 22, 1993, Federal Register notice, 
    the Department did not intend to change the focus of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    in this rulemaking. The Department has always intended restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    to involve actions taken to return a resource to baseline. Apparent 
    inconsistencies in the rule arise because trustee officials need a 
    means of measuring injury in order to determine when restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    is complete, and the concept of services provides that means. As was 
    stated in the August 1, 1986, preamble to the original type B rule:
    
        Traditionally humans have valued natural resources in monetary 
    terms on the basis of services provided by the resources. This 
    method logically may be extended to valuing damages to an injured 
    resource on the basis of changes in services. This rule establishes 
    the link between measured adverse changes in the condition of the 
    resource, the injury, and the damages through the measurement of 
    changes in the services provided by the injured resource. 51 FR 
    27686.
    
        In other words, although it is the natural resource that trustee 
    officials are restoring, rehabilitating, replacing, and/or acquiring 
    the equivalent of, such actions cause an increase in services, and that 
    increase in services is used to measure the level of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources.
        As evidenced by the statutory provision allowing trustee officials 
    to acquire equivalent natural resources, Congress did not envision that 
    trustee officials would, could, or should always replicate the exact 
    same injured resources. Therefore, the rule gives trustee officials the 
    discretion to decide, based on consideration of designated factors, how 
    best to provide the public with natural resources that offer the same 
    baseline level of services. Further, trustee officials have the 
    discretion to decide which services to consider when determining the 
    necessary level of restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources.
        The Department does not believe that using baseline service levels 
    to measure restoration, rehabilitation, replacement, and/or acquisition 
    of equivalent resources fails to make the public whole. In the 
    groundwater example offered by the commenters, the resource may well 
    provide a service other than that of being a drinking water supply. For 
    example, in the August 1, 1986, preamble to the original type B rule, 
    the Department noted that one service provided by resources with low 
    baseline concentrations of hazardous substances or oil is the service 
    of ``being able to absorb low levels of that material without exceeding 
    standards or without other effects.'' 51 FR 27716. Trustee officials 
    have the discretion to consider this and other services when 
    determining the necessary level of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources.
        Also, the Department does not think that using baseline services to 
    measure restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources violates the Ohio v. Interior holding concerning 
    committed uses. The term ``committed use,'' which applies only to 
    calculation of compensable values, refers to human uses of resources. 
    The definition of ``services,'' which was not affected by this 
    rulemaking, includes more than just functions provided by the injured 
    resource for humans. When determining the necessary level of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources, trustee officials have the discretion to consider 
    services provided by the injured resource for another resource, 
    regardless of whether there is a committed human use of those services.
        Finally, the Department did not intend to suggest in the July 22, 
    1993, Federal Register notice that trustee officials may not use 
    manufactured devices to assist the restoration of injured resources. 
    The Department simply meant that trustee officials should not replace 
    injured natural resources with artificial resources.
        Comment: There were a number of comments about whether restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    should include reestablishing baseline services provided by the injured 
    resource to other resources (e.g., provision of a food source for fish 
    or wildlife). Some commenters supported consideration of inter-resource 
    services in order to ensure complete restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources. Other 
    commenters thought that trustee officials generally should not consider 
    inter-resource services. These commenters stated that requiring 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent inter-resource services would amount to requiring 
    replication of the exact natural resource that was injured. These 
    commenters expressed concern that there is currently no way of 
    accurately quantifying inter-resource service levels. Some of these 
    commenters suggested that inter-resource services be considered only 
    when they have value to humans.
        Response: Section 11.71(e), which was not affected by this 
    rulemaking, allows trustee officials to consider inter-resource 
    services when quantifying an injury. Since restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources is designed to 
    correct an injury, trustee officials have the discretion to consider 
    inter-resource services when determining the necessary level of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources. As was noted in the August 1, 1986, preamble to 
    the original type B rule:
    
        * * * The non-human services may be more important [than 
    services used by humans] in measuring changes in how well a wildlife 
    habitat or marsh is supporting wildlife, controlling floods, 
    assimilating wastes, and providing any other services that may be 
    important. 51 FR 27687.
    
        Moreover, as discussed above, prohibiting trustee officials from 
    considering inter-resource services could violate the Ohio v. Interior 
    holding concerning committed use. J. Selection of a Restoration, 
    Rehabilitation, Replacement, and/or Acquisition Alternative
        Comment: There were numerous comments on the factors for 
    consideration during selection of a restoration, rehabilitation, 
    replacement, and/or acquisition alternative. Several commenters thought 
    that the proposed rule would afford trustee officials the appropriate 
    degree of discretion by providing factors for consideration but leaving 
    the question of how to weigh those factors up to the trustee officials.
        A number of other commenters thought that the proposed rule would 
    provide trustee officials with too much discretion over selection of a 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative. These commenters supported the Department's proposal to 
    require trustee officials to consider all of the listed factors. 
    However, these commenters stated that simply requiring consideration of 
    the factors was inadequate. These commenters stated that the Department 
    should provide guidance on how trustee officials should consider and 
    weigh the factors in order to prevent abuses of discretion. A few 
    commenters objected to the Department's statement that development of a 
    post-award Restoration Plan would curb potential abuses of discretion 
    by a trustee official in selecting a pre-award restoration, 
    rehabilitation, replacement, and/or acquisition alternative to serve as 
    the basis of the trustee official's claim.
        Response: Section 11.82(d) lists factors for trustee officials to 
    consider when choosing a restoration, rehabilitation, replacement, and/
    or acquisition alternative. The language of the proposed rule has been 
    revised to require trustee officials to consider all of the listed 
    factors. However, in light of the wide range of possible natural 
    resource damage cases, the Department believes that trustee officials 
    must have flexibility when selecting a restoration, rehabilitation, 
    replacement, and/or acquisition alternative. Therefore, the rule does 
    not mandate how trustee officials should weigh the listed factors.
        The rule provides a number of protections against potential abuses 
    of discretion by trustee officials. Trustee officials are required to 
    document their rationale for selecting a particular alternative. This 
    documentation is included both in the Restoration and Compensation 
    Determination Plan, which is subject to public review and comment, and 
    in the Report of Assessment, which is reviewable in court. Finally, the 
    rule provides that the Restoration Plan, which describes how the 
    damages that are actually collected will be spent, is to be based on 
    the alternatives selected in the Restoration and Compensation 
    Determination Plan. Although the Restoration Plan is developed after 
    damages have been recovered, the Restoration Plan is subject to public 
    review and comment. Therefore, trustee officials who propose 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternatives that differ from those used as a basis for damages will 
    have to explain the reasons for the difference.
        Comment: Some commenters thought that trustee officials should be 
    required to choose restoration, rehabilitation, replacement, and/or 
    acquisition alternatives that are technically feasible.
        Response: The rule lists technical feasibility as one of the 
    factors that trustee officials must consider when selecting a 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative. Under Sec. 11.14(qq) of the rule, an alternative is 
    ``technically feasible'' if it involves well-known technology and has a 
    reasonable chance of successful completion in an acceptable period of 
    time. Different alternatives may possess varying degrees of 
    feasibility. The technical feasibility factor is designed to require an 
    evaluation of these varying degrees of technical feasibility rather 
    than to establish a strict standard of feasibility for acceptable 
    alternatives. Nevertheless, trustee officials should not select 
    alternatives that are infeasible.
        Comment: A number of commenters suggested that trustee officials 
    should be required to choose the restoration, rehabilitation, 
    replacement, and/or acquisition alternative that maximized net benefits 
    or was most cost effective.
        Response: Ohio v. Interior recognized that cost considerations, 
    although relevant, are not paramount under CERCLA. Therefore, the rule 
    does not require trustee officials to select the alternative that is 
    most cost effective or that minimizes costs. However, the rule does 
    require trustee officials to consider both cost effectiveness and the 
    relationship between costs and benefits when selecting a restoration, 
    rehabilitation, replacement, and/or acquisition alternative.
        When considering the relationship between costs and benefits, 
    trustee officials should consider how each restoration, rehabilitation, 
    replacement, and/or acquisition alternative would affect not only the 
    injured resources but also lost interim use of those resources. Total 
    damages will depend on the sum of compensable value and restoration, 
    rehabilitation, replacement, and/or acquisition costs. Often there will 
    be tradeoffs between compensable value and restoration, rehabilitation, 
    replacement, and/or acquisition costs. For example, a fast-paced 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative may result in a lower level of interim lost use, and thus 
    reduce associated compensable values. However, implementation of such 
    an alternative may result in significantly higher restoration, 
    rehabilitation, replacement, and/or acquisition costs. In some cases, 
    there may be sufficient data to demonstrate that some restoration, 
    rehabilitation, replacement, and/or acquisition alternatives result in 
    substantially lower total damages than others.
        In its January 7, 1994 notice of proposed rulemaking, NOAA 
    solicited comment on whether its damage assessment regulations under 
    OPA should require trustee officials to explain their rationale if they 
    select a restoration, rehabilitation, replacement, and/or acquisition 
    alternative that does not minimize total damages. 59 FR 1134. If NOAA 
    does include such a requirement in its final damage assessment 
    regulations, the Department will consider whether a similar requirement 
    should be added to the Department's type B rule during the upcoming 
    biennial review.
        Comment: A few commenters thought that the Department should 
    require trustee officials to select a restoration, rehabilitation, 
    replacement, and/or acquisition alternative that is consistent with the 
    response actions taken at the site. These commenters expressed concern 
    that without such a requirement, State trustee officials could 
    circumvent section 121(f) of CERCLA, which requires States to bear the 
    cost of obtaining cleanup levels beyond those selected by the United 
    States Environmental Protection Agency (EPA).
        Response: Section 11.23(f) of the rule, which was not affected by 
    this rulemaking, requires trustee officials to coordinate their 
    activities with the lead response agency. Also, Sec. 11.82(d)(4) of 
    this final rule requires trustee officials to consider the effects of 
    any actual or planned response actions when selecting a restoration, 
    rehabilitation, replacement, and/or acquisition alternative. The 
    Department encourages trustee officials to work closely with EPA, the 
    United States Coast Guard, and State response agencies. However, the 
    Department recognizes that the purpose of a response action may differ 
    from that of an action to restore, rehabilitate, replace, and/or 
    acquire the equivalent of injured resources. Therefore, the Department 
    does not believe that consistency with response actions should govern 
    the selection of a restoration, rehabilitation, replacement, and/or 
    acquisition alternative.
        The Department does not believe that section 121(f) of CERCLA is 
    applicable in this context. Section 121(f) addresses whether the cost 
    of attaining a certain cleanup level should be borne by the Federal 
    Hazardous Substance Superfund or by the State; it does not address PRP 
    liability for natural resource damages.
        Comment: Some commenters requested that trustee officials be 
    required to provide a detailed analysis of the factors listed in 
    Sec. 11.82(d).
        Response: The Department believes that a trustee official's 
    analysis of the factors listed in Sec. 11.82(d), like all statements 
    required under the regulations, should be detailed enough to provide 
    PRPs, other trustee officials, the general public, any other interested 
    parties, and ultimately the courts with an adequate opportunity to 
    evaluate the analysis. The level of detail may vary depending on the 
    alternatives involved. The Department does not believe that any 
    revision of the rule is necessary.
        Comment: One commenter requested that proposed Sec. 11.82(d)(10), 
    which addressed consideration of consistency with applicable Federal 
    and State laws and policies, be amended to include reference to tribal 
    laws and policies.
        Response: The Department agrees with the commenter and has revised 
    the rule accordingly. As noted in the July 22, 1993, Federal Register 
    notice, the Department has also decided that consideration of 
    compliance with applicable Federal, State, and tribal laws should be 
    distinguished from consideration of consistency with relevant Federal, 
    State, and tribal policies. Therefore, the Department has revised the 
    language of proposed Sec. 11.82(d)(10) to list these two factors 
    separately.
        Comment: A few commenters suggested that the Department prohibit 
    trustee officials from considering factors other than those listed. 
    These commenters expressed concern that in the absence of such a 
    prohibition, trustee officials might base their decisions on 
    inappropriate considerations.
        Response: The Department believes that in some situations there may 
    be appropriate considerations in addition to the factors listed in 
    Sec. 11.82(d). Section 11.82(d) already provides that all factors 
    considered must be relevant. The Department does not believe that any 
    revision of the rule is necessary.
        Comment: Some commenters stated that the rule should clearly 
    authorize trustee officials to choose a natural recovery alternative 
    when selecting a restoration, rehabilitation, replacement, and/or 
    acquisition alternative. Some commenters thought that the Department 
    should provide guidance on how trustee officials could maximize the 
    opportunities for natural recovery.
        Response: The Department believes that the rule does clearly 
    authorize trustee officials to select a natural recovery alternative 
    when appropriate. In fact, Sec. 11.82(c)(2) explicitly requires trustee 
    officials to consider a ``No Action-Natural Recovery'' alternative. 
    Development of additional guidance is beyond the scope of this 
    rulemaking.
        Comment: Some commenters thought that the rule should not 
    discriminate among the four components of restoration, rehabilitation, 
    replacement, and acquisition of equivalent resources. Other commenters 
    thought that the rule should not grant acquisition of land the same 
    status as restoration, rehabilitation, or replacement. These commenters 
    stated that CERCLA and Ohio v. Interior establish a clear preference 
    for using restoration or replacement costs, as opposed to acquisition 
    costs, as the measure of damages. The commenters noted that section 
    107(f)(1) of CERCLA does list restoration, replacement, and acquisition 
    of equivalent resources as legitimate uses of collected damages but 
    then provides that the measure of damages shall not be limited by 
    restoration and replacement costs. According to the commenters, these 
    statutory provisions indicate, and the court in Ohio v. Interior 
    recognized, that amounts recovered must be spent first on feasible 
    restoration or replacement actions and then any excess funds are to be 
    spent on acquisition of equivalent resources. These commenters also 
    stated that land acquisition does nothing to improve the condition of 
    the injured natural resources.
        Response: In light of the wide range of possible cases, the 
    Department believes that the rule should provide flexibility in the 
    selection of a method to return an injured resource to baseline. The 
    term ``restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources'' was introduced to emphasize that trustee 
    officials may select among a wide range of methods. The Department does 
    not believe that the rule should establish a preference for restoration 
    as opposed to acquisition of equivalent resources. CERCLA explicitly 
    mentions use of recovered funds for restoration, rehabilitation, 
    replacement or acquisition of equivalent resources. The ``shall not be 
    limited by'' language quoted by the commenters simply provides that 
    trustee officials may obtain damages in excess of restoration costs. 
    The statutory language does not require that damages be based on 
    acquisition costs only if restoration is infeasible. Further, the court 
    in Ohio v. Interior did not establish any preference for restoration as 
    opposed to acquisition of equivalent resources. In fact, the court 
    specifically stated that its use of the term ``restoration'' was 
    intended as shorthand for restoration, rehabilitation, replacement, or 
    acquisition of the equivalent of the injured resources. 880 F.2d at 
    441.
        Comment: Some commenters supported the Department's clarification 
    that the restriction on land acquisition set forth in proposed 
    Sec. 11.82(d)(8) would apply only to Federal trustee officials, not 
    State or tribal trustee officials. Other commenters thought that the 
    restriction should be eliminated altogether.
        Response: As was noted in the August 1, 1986, preamble to the 
    original type B rule, the restriction on land acquisition by Federal 
    trustee officials was included:
    
        * * * After extensive consultation with other Federal agencies. 
    The purpose of this limitation is to limit the acquisition of 
    private lands for Federal management under CERCLA, by eliminating 
    the possibility of expanding the Federal estate without 
    Congressional approval. 51 FR 27719.
    
        To avoid any confusion, the Department has removed the restriction 
    from the list of factors that all trustee officials must consider when 
    selecting a restoration, rehabilitation, replacement, and/or 
    acquisition alternative and designated it as a separate provision. 
    Further revision is beyond the scope of this rulemaking.
        Comment: Some commenters requested that trustee officials be 
    prohibited from selecting a restoration, rehabilitation, replacement, 
    and/or acquisition alternative that involves the purchase of 
    contaminated land.
        Response: The Department anticipates that there may be situations 
    in which it is difficult to identify available land in the appropriate 
    geographical region that provides services identical to those provided 
    by the injured resources. Therefore, the Department believes it would 
    be inappropriate to further restrict trustee officials by requiring 
    them to acquire only land that is free from all contamination.
        Comment: Some commenters thought that if trustee officials based 
    their damage claim on acquisition costs, they should be required to 
    demonstrate a clear link between the services lost and the services 
    provided by the acquired resource.
        Response: The rule provides that trustee officials are to select a 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative that reestablishes baseline services. Therefore, any 
    alternative based on acquisition of resources would have to involve 
    acquiring resources that provide services equivalent to those lost as a 
    result of the injury.
        Comment: One commenter expressed concern that proposed 
    Sec. 11.82(b)(1) could be read to require trustee officials to examine 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternatives on a resource-by-resource basis.
        Response: The Department did not intend to require trustee 
    officials to examine restoration, rehabilitation, replacement, and/or 
    acquisition alternatives on a resource-by-resource basis. To avoid any 
    confusion, the Department has revised the language of the proposed rule 
    to refer to ``resources'' rather than ``resource.''
    
    K. Costs of Restoration, Rehabilitation, Replacement, and/or 
    Acquisition of Equivalent Resources
    
        Comment: A number of commenters objected to the inclusion of 
    indirect costs as recoverable restoration, rehabilitation, replacement, 
    and/or acquisition costs. These commenters stated that indirect costs 
    are not recoverable in natural resource damage cases as a matter of 
    law. The commenters acknowledged that courts have awarded indirect 
    costs in response actions; however, the commenters stated that those 
    courts relied on the broad language of section 107(a)(4)(A) of CERCLA, 
    which authorizes recovery of ``all costs of removal or remedial 
    action.''
        Some commenters cited case law for the proposition that indirect 
    costs are generally not recoverable. United States v. Rohm and Haas 
    Company, 2 F.3d 1265 (3d Cir. 1993) (U.S. v. Rohm and Haas). A few 
    commenters stated that recoverable indirect costs should be limited to 
    those actually caused by the release and objected to the reference in 
    proposed Sec. 11.83(b)(1)(ii) to recovery of costs of activities that 
    ``support'' the selected restoration, rehabilitation, replacement, and/
    or acquisition alternative. These commenters also stated that the 
    Department should clarify that the cost of policy formulation is not 
    recoverable.
        Response: The Department believes that inclusion of indirect costs 
    in an assessment is consistent with both Ohio v. Interior and the 
    language and legislative history of CERCLA, which emphasize development 
    of a damage figure that will make the public whole. 880 F.2d at 445. 
    Section 107(f)(1) of CERCLA contains the broad language that ``[t]he 
    measure of damages shall not be limited by the sums which can be used 
    to restore or replace'' the injured resources.
        The Department agrees that PRPs are only liable for those indirect 
    costs that are connected to a specific release or discharge. However, 
    the Department does not believe that revisions to the language of the 
    proposed rule are necessary. Furthermore, although the Department does 
    not think that the cost of policy formulation would generally be 
    recoverable, there may be some cases in which certain policy 
    formulation activities would not take place but for the occurrence of a 
    specific release or discharge. In those cases, and only in those cases, 
    the costs of policy formulation could be recoverable.
        The Department does not believe that U.S. v. Rohm and Haas is 
    relevant. The court in that case held that EPA oversight of cleanup 
    activities conducted by PRPs did not constitute a ``removal'' action 
    under CERCLA, and therefore the cost of the oversight was not 
    recoverable. The court did not address the recoverability of indirect 
    costs associated with government action. In fact, the court 
    specifically stated that ``this case does not involve the issue of 
    whether indirect, overhead costs associated with government removal or 
    remedial activity at a particular facility are recoverable * * *.'' 2 
    F.3d at 1273. The indirect costs recoverable under this rule are not 
    oversight costs but rather costs that trustee officials will incur as 
    they undertake restoration, rehabilitation, replacement, and/or 
    acquisition.
        Comment: A few commenters sought clarification of the meaning of 
    the following language in proposed Sec. 11.83(b)(1)(iii):
    
        When an indirect cost rate is used * * * [s]uch amounts 
    determined in lieu of indirect costs shall be treated as an offset 
    to the total indirect costs of the selected alternative before 
    allocation to the remaining activities. The base upon which such 
    remaining costs are allocated should be adjusted accordingly.
    
        Response: The Department acknowledges the confusion generated by 
    these last two sentences of proposed Sec. 11.83(b)(1)(iii) and has 
    deleted them.
        Comment: Some commenters objected to the language of proposed 
    Sec. 11.83(b)(3) limiting trustee officials to cost estimating 
    methodologies based on accounting practices. These commenters stated 
    that accounting practices are generally developed to deal with past 
    events and that methodologies developed in other disciplines are better 
    suited for estimating future expenses. The commenters suggested that 
    trustee officials be allowed to use methodologies based on ``standard 
    and accepted professional practices'' or simply ``standard and accepted 
    estimating practices,'' including engineering practices and public 
    budgeting practices.
        Response: The Department did not intend to limit trustee officials 
    to using only accounting practices. The Department has revised the 
    language of proposed Sec. 11.83(b)(3) to allow for the use of any 
    standard and accepted cost estimating practices provided that the 
    trustee officials can document that those practices satisfy the 
    criteria set forth in Sec. 11.83(a)(3).
        Comment: One commenter stated that the rule should explicitly 
    recognize the authority of trustee officials to use combinations of 
    different cost estimating methodologies.
        Response: The Department agrees that trustee officials should be 
    allowed to use combinations of different cost estimating methodologies, 
    so long as the different methodologies either do not double count 
    damages or allow any double counting to be estimated and eliminated in 
    the final damage calculation. The Department has revised the language 
    of proposed Sec. 11.83(b)(2) to make this point clear.
        Comment: A few commenters thought that the proposed rule provided 
    inadequate guidance on selection and use of cost estimating 
    methodologies.
        Response: The Department believes that development of additional 
    guidance is beyond the scope of this rulemaking.
    
    L. Compensable Value
    
        Comment: A few commenters thought that the proposed rule provided 
    inadequate guidance on selection and use of valuation methodologies.
        Response: The ``Type B Technical Information Document: Techniques 
    to Measure Damages to Natural Resources,'' which was developed in 1987, 
    is available through the National Technical Information Service, 5285 
    Port Royal Road, Springfield, Virginia 22161, (703) 487-4650. The 
    Department is considering updating the document; however, such revision 
    is beyond the scope of this rulemaking.
        Comment: Some commenters requested that proposed Sec. 11.84(h)(3) 
    be revised to allow State trustee officials to assess and recover 
    compensable value for all individuals, not just those within the State.
        Response: The ``scope of analysis'' provisions contained in 
    Sec. 11.84(h)(3) have not been substantively changed by this 
    rulemaking. Virtually identical provisions were incorporated in 
    Sec. 11.84(i) during the August 1, 1986, rulemaking. This final rule 
    merely substitutes the term ``compensable value'' for the term ``use 
    value.'' Further clarification is beyond the scope of this rulemaking.
        Comment: A few commenters questioned what was meant by the term 
    ``secondary economic impacts,'' which would be excluded from the 
    definition of ``compensable value'' under proposed Sec. 11.83(c)(1).
        Response: The Department believes that introducing the term 
    ``secondary economic impacts'' into the regulations would create 
    unnecessary confusion. Therefore, the Department has revised the 
    proposed rule to eliminate the term. Nevertheless, the Department notes 
    that all recoverable values must be traceable to a direct loss of 
    services provided to the public.
    
    M. Date of Promulgation of the Natural Resource Damage Assessment 
    Regulations
    
        Comment: There were numerous comments on proposed Sec. 11.91(e) 
    clarifying the date of promulgation of the natural resource damage 
    assessment regulations for statute of limitations purposes. Several 
    commenters supported proposed Sec. 11.91(e). These commenters stated 
    that clarification of the date of promulgation was necessary and within 
    the Department's statutory authority and technical expertise. Other 
    commenters thought that clarification of a term in the statute of 
    limitations was a judicial matter beyond the Department's authority and 
    expertise.
        Response: The Department believes that it has full authority to 
    issue Sec. 11.91(e). Section 301(c) of CERCLA authorizes the Department 
    to ``promulgate regulations for the assessment of damages for injury to 
    * * * natural resources.'' Section 113(g)(1) of CERCLA creates a 
    statute of limitations based on the date that those regulations are 
    ``promulgated.'' Since Ohio v. Interior and Colorado v. Interior were 
    issued, there has been considerable confusion over the statute of 
    limitations. Nothing in the language or legislative history of CERCLA 
    explicitly defines ``promulgation.'' As the agency given authority to 
    develop procedures for assessing natural resource damages, the 
    Department believes it is in the best position to evaluate when 
    regulations establishing full procedures have been promulgated. 
    Issuance of Sec. 11.91(e) is designed merely to clarify an unclear 
    statutory term and is well within the scope of the Department's 
    expertise and statutory grant of authority.
        Comment: Some commenters stated that the proposed clarification was 
    consistent with Congressional intent. These commenters noted 
    legislative history indicating that section 113(g)(1) was added to 
    CERCLA out of concern that the absence of final natural resource damage 
    assessment regulations had impaired the ability of trustee officials to 
    pursue claims. According to these commenters, trustee officials are 
    just as handicapped after Ohio v. Interior and Colorado v. Interior as 
    they were when section 113(g)(1) was passed because those cases 
    invalidated a crucial aspect of the regulations, namely the measure of 
    damages.
        Other commenters stated that the proposed clarification could not 
    be consistent with Congressional intent because it would allow the 
    statute of limitations to be tolled indefinitely. These commenters 
    disagreed with the Department's statement in the July 22, 1993, Federal 
    Register notice that Ohio v. Interior and Colorado v. Interior left 
    trustee officials without a measure of damages. These commenters stated 
    that Ohio v. Interior established restoration costs as the measure of 
    damages.
        Response: The Department believes that proposed Sec. 11.91(e) is 
    completely consistent with Congressional intent. Ohio v. Interior did 
    not overturn the regulations in their entirety; however, it did remand 
    an extremely critical component of the regulations, namely the measure 
    of damages. Although Ohio v. Interior held that restoration costs are 
    the preferred measure of damages, the court also acknowledged that the 
    Department has considerable authority and discretion to shape the 
    specific scope of the measure of damages. Thus, until the Department 
    revises the regulations, no valid measure of damages exists.
        Section 11.91(e) does not allow the statute of limitations to be 
    tolled indefinitely, it merely ensures that trustee officials are not 
    barred from bringing suit before they have the benefit of complete 
    procedures for assessing natural resource damages. The legislative 
    history of the Superfund Amendments and Reauthorization Act (SARA) 
    indicates that section 113(g)(1) was added to CERCLA because Congress 
    believed that so long as trustee officials lacked procedures for 
    assessing natural resource damages they were handicapped in their 
    ability to bring suit. In the absence of a valid damage formula, the 
    very goal of the natural resource damage assessment regulations, namely 
    the derivation of a monetary damage figure, cannot be fully realized.
        Comment: Some commenters stated that the proposed clarification of 
    the date of promulgation was incorrect as a matter of law and common 
    sense. The commenters cited dictionaries and case law for the 
    proposition that the date of promulgation is the date on which a signed 
    rule is first made public or is published, not when it has cleared 
    judicial hurdles. United States v. City of Seattle, No. C90-395WD, slip 
    op. (W.D. Wash. Jan. 28, 1991) (U.S. v. Seattle); American Petroleum 
    Institute v. Costle, 609 F.2d 20, 23-24 (D.C. Cir. 1979) (API v. 
    Costle); United Technologies Corp. v. Occupational Safety and Health 
    Administration, 836 F.2d 52, 54 (2d Cir. 1987) (UTC v. OSHA).
        Response: The Department believes that the cases cited by 
    commenters for the proposition that ``promulgation'' occurs when a 
    regulation is first made public are inapposite. API v. Costle involved 
    the interpretation of a provision of the Clean Air Act that prohibited 
    the inclusion of documents in a rulemaking docket after the date of 
    promulgation. 609 F.2d at 22. Noting that the statutory provision was 
    designed to ensure adequate opportunity for public review and to 
    prevent post hoc rationalizations, the court held that the date of 
    promulgation was the date the final rule was first released to the 
    public as opposed to the date of publication in the Federal Register. 
    Id. at 23-24.
        UTC v. OSHA involved the statute of limitations period for filing a 
    challenge to an OSHA standard. 836 F.2d at 53. The statute provided 
    that any challenges to a standard issued by OSHA had to be brought 
    within 60 days after the standard was promulgated. Id. OSHA regulations 
    defined ``the date of issuance'' as the time of filing in the Office of 
    the Federal Register but did not define ``promulgation.'' Nevertheless, 
    OSHA argued that the date of promulgation should also be the date of 
    filing with the Office of the Federal Register. The court noted that 
    Congress, by using two different terms, must have intended the date of 
    issuance to differ from the date of promulgation. Id. Therefore, the 
    court held that the date of promulgation was the date of publication in 
    the Federal Register. Id. at 54.
        Neither API v. Costle nor UTC v. OSHA purport to define 
    ``promulgation'' for all purposes. In fact, the cases reveal that the 
    definition of ``promulgation'' can vary, depending on Congressional 
    intent. The cases also do not address the specific question of the 
    effect of a judicial remand on the date of promulgation for statute of 
    limitation purposes. Further, the court in UTC v. OSHA recognized an 
    agency's authority to determine when its regulations had been 
    promulgated, stating that ``[t]he agency is certainly entitled to adopt 
    a definition of `promulgated', and it may well have the power to equate 
    `promulgated' with `issued', if it chooses to.'' Id. at 53. The problem 
    in that case was that the agency had not issued a regulation defining 
    ``promulgation.''
        U.S. v. Seattle involved a motion to dismiss a natural resource 
    damage case on statute of limitations grounds. The defendant had argued 
    that the statute of limitations began to run on August 1, 1986, the 
    date the original type B rule was published. In an unpublished opinion, 
    the court denied the motion to dismiss and held that the statute of 
    limitations did not begin to run until both type A and type B rules had 
    been promulgated. Slip op. at 1. Because the case had been filed within 
    three years of March 20, 1987, the date the original type A rule was 
    published, the court did not need to reach, and did not address, the 
    issue of the effect of Ohio v. Interior and Colorado v. Interior on the 
    date of promulgation.
        However, in light of existing case law, the Department has decided 
    that it would be more appropriate to base the date of promulgation on 
    the date of publication of final rules complying with Ohio v. Interior 
    and Colorado v. Interior rather than the date of effectiveness of those 
    final rules. The Department has revised the rule accordingly.
        Comment: A few commenters noted that section 113(a) of CERCLA 
    provides that any challenge to regulations issued under the statute 
    must be brought within 90 days of promulgation. These commenters stated 
    that if the natural resource damage assessment regulations had not been 
    promulgated, the court in Ohio v. Interior would not have had 
    jurisdiction.
        Response: The Department does not dispute that the court in Ohio v. 
    Interior had jurisdiction under section 113(a) of CERCLA. However, the 
    Department does not believe that determination of the date of 
    promulgation for purposes of section 113(a) is necessarily dispositive 
    of the issue of the date of promulgation for purposes of section 
    113(g)(1).
        Comment: A few commenters expressed concern that the Department has 
    a conflict of interest because issuance of the proposed clarification 
    of the date of promulgation would preserve the Department's ability to 
    pursue its own natural resource damage claims.
        Response: The Department does not believe that it has allowed its 
    duties as a Federal trustee agency to prejudice the development of the 
    natural resource damage assessment regulations. The Department has 
    striven to develop regulations that are fair to not only trustee 
    officials and the general public but also PRPs. Moreover, the 
    Department notes that it is not only a trustee agency but frequently a 
    PRP in natural resource damage cases.
    
    N. Judicial Review of an Assessment
    
        Comment: There were a number of comments concerning judicial review 
    of assessments performed in accordance with the rule. Some commenters 
    supported the Department's statement in the July 22, 1993, Federal 
    Register notice that the rebuttable presumption attaches only to those 
    assessments that are performed in accordance with the entire rule.
        Other commenters disagreed, stating that the different components 
    of the rule are not inextricably intertwined and that trustee officials 
    need the flexibility to decide which aspects of the rule are 
    appropriate for a particular assessment. These commenters stated that 
    the language of section 107(f) of CERCLA, which grants a rebuttable 
    presumption to assessments performed ``in accordance'' with the rule, 
    allows trustee officials to obtain a rebuttable presumption for any 
    portion of an assessment that is in accordance with the rule. These 
    commenters thought that if trustee officials assessed one component of 
    damages following the rule and another component without following the 
    rule they should still be able to obtain a rebuttable presumption for 
    the component that was assessed in accordance with the rule.
        Response: The Department's statement that the rebuttable 
    presumption attaches only to those assessments performed in accordance 
    with the entire rule was not intended to suggest that trustee officials 
    would lose the rebuttable presumption if they supplemented the damage 
    claim assessed under the rule with additional claims assessed without 
    following the rule. The rule provides both an overall administrative 
    process for development and review of documentation as well as a range 
    of alternative methodologies for the actual determination and 
    quantification of injury and damages. In order to obtain a rebuttable 
    presumption, a trustee official must follow the entire administrative 
    process set forth in the rule. If the trustee official has followed the 
    administrative process, the rebuttable presumption attaches to those 
    components of the damage claim that were calculated through the use of 
    the methodologies described in the rule. However, trustee officials are 
    not required to use all of the listed methodologies in order to obtain 
    a rebuttable presumption.
        For example, if trustee officials decide not to use the rule to 
    assess damages for injury to a particular resource, they need not 
    follow those portions of the rule that describe the methodologies for 
    determining injury to such a resource. In that case, the trustee 
    officials could still obtain a rebuttable presumption for damages for 
    injury to other resources that were calculated using methodologies 
    described in the rule. Similarly, if trustee officials decide not to 
    use the rule to assess damages for a particular element of lost use of 
    an injured resource, they need not follow those portions of the rule 
    that describe methodologies for calculating compensable value for such 
    an element. In that case, the trustee officials could still obtain a 
    rebuttable presumption for damages for other elements of lost use that 
    were calculated using methodologies described in the rule.
        Comment: One commenter disagreed with the Department's statement 
    that CERCLA does not grant a rebuttable presumption to assessments 
    performed by tribal trustee officials. This commenter stated that when 
    SARA was passed, Congress intended to grant tribes the same authority 
    as States in the area of natural resource trustee activities. The 
    commenter further stated that under established case law concerning the 
    Federal government's fiduciary responsibility to tribes, any ambiguity 
    in the statute concerning tribes' right to the rebuttable presumption 
    must be construed in favor of the tribes.
        On the other hand, a few commenters agreed with the Department's 
    statement that CERCLA does not grant a rebuttable presumption to tribal 
    assessments. However, these commenters expressed concern that the 
    Department's statement in the July 22, 1993, Federal Register notice 
    that assessments performed jointly by Federal and tribal trustee 
    officials or by State and tribal trustee officials would qualify for a 
    rebuttable presumption. These commenters thought that such an 
    interpretation would circumvent the language of the statute.
        Response: Section 11.91(c) of the rule was revised in 1988 to 
    reflect the SARA amendment to CERCLA granting a rebuttable presumption 
    to natural resource damage assessments performed by State trustee 
    officials. In the preamble to that rule, the Department stated that 
    SARA did not extend the rebuttable presumption to assessments performed 
    by tribal trustee officials. 53 FR 5167. The Department went on to 
    state that ``Federal trustees and Indian tribes can work closely 
    together in assessments, and such assessments would qualify for a 
    rebuttable presumption.'' Id. at 5168. Further clarification of this 
    issue is beyond the scope of this rulemaking.
        Comment: There were several comments about the applicability of the 
    rebuttable presumption to assessment costs. Some commenters stated that 
    CERCLA provides a rebuttable presumption only for the actual damage 
    assessment performed in accordance with this rule not for the costs of 
    performing the assessment. Other commenters thought that trustee 
    officials who comply with this rule, including the standards for 
    reasonable costs, should be granted a rebuttable presumption that their 
    damage assessment costs are recoverable.
        Response: Section 11.91(c), which was not affected by this 
    rulemaking, provides that when trustee officials perform an assessment 
    in accordance with this rulemaking, the assessment receives a 
    rebuttable presumption. The Department believes that the determination 
    of whether it is reasonable to incur a particular assessment cost is an 
    integral component of a damage assessment. The rule contains specific 
    provisions to guide trustee officials in determining whether to incur a 
    particular assessment cost, including a definition of reasonable 
    assessment costs that was specifically upheld in Ohio v. Interior. 
    Therefore, the Department believes that trustee officials that comply 
    with this rule, including the standards for determining reasonable 
    assessment costs, should be granted a rebuttable presumption that their 
    assessment costs are reasonable and, thus, recoverable.
        Comment: Some commenters thought that the Department should clarify 
    that judicial review of an assessment is limited to the data in the 
    administrative record. These commenters stated that, in the absence of 
    such a clarification, PRPs would refuse to disclose any of their data 
    until formal judicial discovery begins but would demand that trustee 
    officials make all of their data available for public review and 
    comment as early in the assessment process as possible. These 
    commenters expressed concern that such a result would put trustee 
    officials at a significant disadvantage in natural resource damage 
    litigation.
        Response: Clarification of the data that will be admitted in a 
    natural resource damage case is beyond the scope of this rulemaking.
    
    O. Use of Collected Damages
    
        Comment: Some commenters stated that trustee officials should be 
    required to spend all collected damages on implementation of the same 
    restoration, rehabilitation, replacement, and/or acquisition 
    alternative that was selected in the Restoration and Compensation 
    Determination Plan as the basis for the damage claim. These commenters 
    thought that without such a requirement, trustee officials would have 
    little incentive to perform accurate assessments. There were 
    suggestions that trustee officials be required to notify or obtain 
    permission from the court or the PRPs before implementing a final 
    Restoration Plan that differs significantly from the Restoration and 
    Compensation Determination Plan.
        Response: The Department does not believe that the rule should 
    explicitly require collected damages to be spent on implementation of 
    the same restoration, rehabilitation, replacement, and/or acquisition 
    alternative selected in the Restoration and Compensation Determination 
    Plan. Section 11.93(a) provides that upon award of natural resource 
    damages, trustee officials must prepare a Restoration Plan describing 
    how the awarded funds will be used. Section 11.93(a) states that the 
    Restoration Plan shall be based on the Restoration and Compensation 
    Determination Plan. The Restoration Plan is intended to be a detailed 
    description of the implementation of the alternative selected in the 
    Restoration and Compensation Determination Plan. However, the 
    Department recognizes that there may be unforeseen changes in the 
    condition of the natural resources between the time the Restoration and 
    Compensation Determination Plan is prepared and the time trustee 
    officials actually collect damages. Also, the amount of damages 
    ultimately collected may differ from the amount of damages claimed. 
    Finally, the actual cost of restoring, rehabilitating, replacing, and/
    or acquiring the equivalent of the injured resources may differ from 
    the estimated cost. Therefore, trustee officials may need to revise the 
    alternative selected in the Restoration and Compensation Determination 
    Plan.
        The Department does not believe that absence of a requirement that 
    trustee officials implement the same exact alternative selected in the 
    Restoration and Compensation Determination Plan will eliminate trustee 
    officials' incentive to conduct accurate assessments. The Restoration 
    Plan is subject to public review and comment, and trustee officials who 
    propose restoration, rehabilitation, replacement, and/or acquisition 
    alternatives that differ from those used as a basis for damages will 
    have to explain the reasons for the difference. The Department believes 
    that making the draft Restoration Plan available for public review and 
    comment should provide interested parties with adequate notice of 
    proposed changes from the Restoration and Compensation Determination 
    Plan.
        Comment: A few commenters requested guidance on determining when 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources is complete. Some commenters suggested that 
    trustee officials provide PRPs with a certification when restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    is essentially completed so that PRPs will not remain liable 
    indefinitely.
        Response: Section 11.73(a) provides that the recovery period is the 
    time until baseline services have been reestablished. The Department 
    does not believe it is necessary to require trustee officials to 
    provide PRPs with a certification when restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources is essentially 
    completed. The extent of a PRP's continuing liability after damages 
    have been collected depends on the terms of the judgment or settlement 
    agreement. Additional clarification is beyond the scope of this 
    rulemaking.
        Comment: Some commenters stated that any portion of collected 
    damages that is not spent to restore, rehabilitate, replace, and/or 
    acquire the equivalent of the injured resources or to supply lost uses 
    should be returned to the PRPs. These commenters disagreed with the 
    Department's statement in the July 22, 1993, Federal Register notice 
    that such a requirement was unnecessary because there should never be 
    excess funds after completion of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources. These 
    commenters noted that because damages are based on estimated costs of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources and estimated compensable values, there will be 
    excess funds whenever trustee officials overestimate costs or 
    compensable values.
        Response: The Department believes that revision of the regulations 
    to address the disposition of any excess damage recoveries is beyond 
    the scope of this rulemaking.
        Comment: One commenter asked the Department to recognize the right 
    of co-trustees to spend collected damages on implementation of 
    different Restoration Plans.
        Response: Nothing in the rule prohibits co-trustees from 
    implementing different Restoration Plans. Additional clarification of 
    this issue is beyond the scope of this rulemaking.
    
    P. Miscellaneous Comments
    
    1. Funding of Tribal Assessments
    
        Comment: One commenter asked the Department to acknowledge that its 
    fiduciary responsibility to tribes extends to natural resource damage 
    assessments involving tribal resources. This commenter requested that 
    the Department develop funding mechanisms for natural resource damage 
    assessments involving tribal resources.
        Response: Discussion of this issue is beyond the scope of this 
    rulemaking.
    
    2. Quality Assurance Plans
    
        Comment: Several commenters stated that the rule should be revised 
    to eliminate the requirement that trustee officials adopt quality 
    assurance plans that conform with EPA guidance. These commenters 
    thought that EPA guidance on quality assurance is poorly suited for 
    natural resource damage assessment work. One commenter noted that the 
    Department had incorrectly stated that proposed Sec. 11.31(c)(4) 
    contained a reference to EPA quality assurance guidance when in fact 
    that reference is contained in Sec. 11.31(c)(3) of the existing rule.
        Response: In the July 22, 1993, Federal Register notice, the 
    Department inadvertently suggested that proposed Sec. 11.31(c)(4) would 
    require trustee officials to include in their Assessment Plans quality 
    assurance plans that complied with EPA guidance. Section 11.31(c)(4) 
    contains no reference to quality assurance plans. Section 11.31(c)(3), 
    which was renumbered but not substantively affected by this rulemaking, 
    does require that trustee officials develop a quality assurance plan 
    that satisfies the requirements listed in EPA guidance, but only if 
    that guidance is applicable. Further clarification is beyond the scope 
    of this rulemaking.
    
    3. Threat of a Release or Discharge
    
        Comment: Some commenters disagreed with the Department's statement 
    in the July 22, 1993, Federal Register notice that the regulations may 
    not be used to assess damages caused by a threat of a release or 
    discharge. These commenters noted that section 107(a) of CERCLA 
    specifically establishes liability for damages from a release or a 
    threat of a release. Further, these commenters noted that natural 
    resource damages include compensation for loss of use of a natural 
    resource. Therefore, these commenters thought that if a threat of a 
    release results in the loss of use of a natural resource, then trustee 
    officials should be able to assess and bring a claim for natural 
    resource damages.
        Response: Section 11.10, which was not affected by this rulemaking, 
    provides that these regulations are only available for the assessment 
    of damages resulting from a discharge of oil or a release of a 
    hazardous substance. Although section 107(a) of CERCLA does refer to a 
    release or a threat of a release, section 107(a)(4)(C) refers to 
    damages for injury to, destruction of, or loss of natural resources 
    ``resulting from such a release.'' Also, section 301(c) of CERCLA 
    authorizes the Department to develop regulations for assessment of 
    ``damages for injury to, destruction of, or loss of natural resources 
    resulting from a release of oil or a hazardous substance.'' Therefore, 
    the rule may only be used when there has been an actual release or 
    discharge, as opposed to a threat of a release or discharge, and actual 
    injury to, destruction of, or loss of a natural resource, as opposed to 
    simply a reduction in use of a resource. Further clarification is 
    beyond the scope of this rulemaking.
    
    4. Coordination With Response Activities
    
        Comment: Some commenters thought that the rule should provide 
    additional guidance on coordination of natural resource damage 
    assessment activities with response activities. A few commenters stated 
    that trustee officials should be required to participate in the 
    remedial planning process. One commenter supported coordination of 
    natural resource damage assessment activities and response activities 
    but urged trustee officials to bear in mind the paramount need for 
    rapid and effective cleanup. One commenter suggested that the On-Scene 
    Coordinator be allowed to contact just one Federal trustee agency and 
    one State trustee agency and that the contacted trustee agencies be 
    required to notify all other trustee agencies.
        Response: The August 1, 1986, preamble to the original type B rule 
    contains considerable discussion of the relationship between response 
    actions and natural resource damage assessments. 51 FR 27681, 27692-93. 
    Further clarification of the issue is beyond the scope of this 
    rulemaking.
    
    5. Injuries Caused by Response Activities
    
        Comment: One commenter asked the Department to clarify that State 
    trustee officials are not allowed to recover damages for injuries 
    caused or aggravated by State-ordered cleanup activities if those 
    injuries were reasonably avoidable. Another commenter interpreted the 
    rule to prohibit recovery of damages for any injuries that trustee 
    officials could have reasonably avoided.
        Response: Section 11.15(a)(1)(ii), which was not affected by this 
    rulemaking, provides that PRPs are liable for any increase in injuries 
    that is reasonably unavoidable as a result of response actions taken or 
    anticipated. As was stated in the August 1, 1986, preamble to the 
    original type B rule,
    
        * * * The Department believes that any response actions 
    undertaken by government agencies should strive to avoid additional 
    injury to natural resources whenever possible. Damages from such 
    ``reasonably unavoidable'' increases in injury resulting from 
    response actions by governmental agencies are not excluded from 
    damage actions, because they are indirectly due to the discharge or 
    release and thus included under section 301(c) of CERCLA. 51 FR 
    27698.
    
        Therefore, if government response activities cause an increase in 
    injuries, trustee officials can only recover damages for the increase 
    if it was reasonably unavoidable. Section 11.15(a)(1)(ii) deals solely 
    with liability for increases in injuries caused by response actions. 
    Section 11.14(jj), which was not affected by this rulemaking, defines 
    ``response'' as removal or remedial actions as defined in sections 
    101(23) and 101(24) of CERCLA.
    
    6. Limitations on Liability
    
        Comment: A few commenters believed that the rule should clarify the 
    application of various statutory limitations on liability, including 
    the ceilings set forth in section 107(c) of CERCLA and the provision in 
    section 107(f)(1) that excludes natural resource damages if those 
    damages and the release that caused those damages occurred wholly 
    before the enactment of CERCLA.
        Response: The Department notes that Secs. 11.15(b) and 11.24(b)(1), 
    which were not affected by this rulemaking, already incorporate the 
    ceilings on damages set forth in section 107(c) of CERCLA and the 
    limitation on damages set forth in section 107(f)(1) of CERCLA. Any 
    further clarification of these provisions is beyond the scope of this 
    rulemaking.
    
    7. Timing of the Restoration and Compensation Determination Plan
    
        Comment: Some commenters thought that the information needed to 
    determine the required level of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources would not be 
    available at the time that the Assessment Plan is made available for 
    public comment and review; therefore, the Restoration and Compensation 
    Determination Plan should not be prepared until after Injury 
    Determination and Quantification have been completed. Other commenters 
    expressed concern that allowing preparation of the Restoration and 
    Compensation Determination Plan to be delayed would lead trustee 
    officials to perform unnecessary and unfocused assessment work during 
    Injury Determination and Quantification. Therefore, the commenters 
    suggested that trustee officials be required to use their best efforts 
    to prepare the Restoration and Compensation Determination Plan at the 
    same time as the rest of the Assessment Plan.
        Response: The Department believes that early preparation of the 
    Restoration and Compensation Determination Plan is advisable to ensure 
    that the costs of assessments are reasonable. The definition of 
    ``reasonable cost,'' which was not affected by this rulemaking, 
    includes a requirement that Injury Determination, Quantification, and 
    Damage Determination bear a well defined relationship to each other. 
    The Assessment Plan, which includes the Restoration and Compensation 
    Determination Plan, is designed to coordinate Injury Determination, 
    Quantification, and Damage Determination. Therefore, the Restoration 
    and Compensation Determination Plan should be prepared as early as 
    possible. In most cases, trustee officials should be able to develop an 
    initial Restoration and Compensation Determination Plan based on 
    estimates of the extent and nature of the injuries and then make 
    revisions as needed. Section 11.32(e)(1) of the rule, which was not 
    affected by this rulemaking, authorizes trustee officials to modify any 
    part of the Assessment Plan at any stage of the assessment as new 
    information becomes available.
        However, the Department recognizes that selection of a restoration, 
    rehabilitation, replacement, and/or acquisition alternative depends in 
    part upon the extent and nature of the injuries, which will not be 
    fully known at the outset of an assessment. Therefore, there may be 
    cases where even a preliminary attempt to evaluate restoration, 
    rehabilitation, replacement, and/or acquisition alternatives would be 
    meaningless unless Injury Determination or Quantification had begun. In 
    these cases, premature preparation of the Restoration and Compensation 
    Determination Plan could temporarily misdirect Injury Determination and 
    Quantification. Therefore, the rule provides that in those cases where 
    existing data are insufficient to develop a Restoration and 
    Compensation Determination Plan at the time that the rest of the 
    Assessment Plan is prepared, the Restoration and Compensation 
    Determination Plan may be developed later. Nevertheless, the 
    Restoration and Compensation Determination Plan must always be 
    developed before completion of Quantification in order to ensure that 
    Quantification is correlated with Damage Determination.
        The Department believes that it is unnecessary to add a requirement 
    that trustee officials use their ``best efforts'' to prepare the 
    Restoration and Compensation Determination Plan along with the rest of 
    the Assessment Plan. Nevertheless, the Department emphasizes that 
    trustee officials should only delay development of the Restoration and 
    Compensation Determination Plan when existing data are insufficient to 
    develop even a rough estimate of the extent of the injuries. Further, 
    if trustee officials do delay development of the Restoration and 
    Compensation Determination Plan, they should complete the Plan as soon 
    as they obtain sufficient information.
    
    National Environmental Policy Act, Regulatory Flexibility Act, 
    Paperwork Reduction Act, and Executive Orders 12866, 12630, 12778, and 
    12612
    
        The Department has determined that this rule does not constitute a 
    major Federal action significantly affecting the quality of the human 
    environment. Therefore, no further analysis pursuant to section 
    102(2)(C) of the National Environmental Policy Act (43 U.S.C. 
    4332(2)(C)) has been prepared.
        The Department certifies that this rule will not have a significant 
    economic effect on a substantial number of small entities under the 
    Regulatory Flexibility Act (5 U.S.C. 601 et seq.). The rule provides 
    technical procedural guidance for the assessment of damages to natural 
    resources. It does not directly impose any additional cost. As the rule 
    applies to natural resource trustees, it is not expected to have an 
    effect on a substantial number of small entities.
        It has been determined that this rule does not contain information 
    collection requirements that require approval by the Office of 
    Management and Budget under the Paperwork Reduction Act (44 U.S.C. 3501 
    et seq.).
        This final rule has been reviewed under Executive Order 12866 and 
    has been determined to constitute a significant regulatory action. 
    However, because of the difficulty of evaluating the effects of 
    alternatives to this rule, the Office of Information and Regulatory 
    Affairs within the Office of Management and Budget has waived 
    preparation of the assessments described in sections 6(a)(3)(B) and 
    6(a)(3)(C) of Executive Order 12866 for the final rule.
        It has been determined that this rule does not have takings 
    implications under Executive Order 12630. The Department has certified 
    to the Office of Management and Budget that this rule meets the 
    applicable standards provided in sections 2(a) and 2(b)(2) of Executive 
    Order 12778. It has been determined that this rule does not have 
    federalism implications under Executive Order 12612.
    
    List of Subjects in 43 CFR Part 11
    
        Continental shelf, Environmental protection, Fish, Forests and 
    forest products, Grazing land, Indian lands, Hazardous substances, 
    Mineral resources, National forests, National parks, Natural resources, 
    Oil pollution, Public lands, Wildlife, Wildlife refuges.
    
        For the reasons set out in the preamble, title 43, subtitle A of 
    the Code of Federal Regulations is amended as follows:
    
    PART 11--NATURAL RESOURCE DAMAGE ASSESSMENTS
    
        1. The authority citation for part 11 continues to read as follows:
    
        Authority: 42 U.S.C. 9651(c), as amended.
    
    Subpart A--Introduction
    
        2. Section 11.13 is amended by revising paragraph (e)(3) to read as 
    follows:
    
    
    Sec. 11.13  Overview.
    
    * * * * *
        (e) * * *
        (3) Damage Determination phase. The purpose of this phase is to 
    establish the appropriate compensation expressed as a dollar amount for 
    the injuries established in the Injury Determination phase and measured 
    in the Quantification phase. The sections of subpart E of this part 
    comprising the Damage Determination phase include guidance on 
    acceptable cost estimating and valuation methodologies for determining 
    compensation based on the costs of restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources, plus, at the 
    discretion of the authorized official, compensable value, as defined in 
    Sec. 11.83(c) of this part.
    * * * * *
        3. Section 11.14 is amended by revising paragraph (qq) to read as 
    follows:
    
    
    Sec. 11.14  Definitions.
    
    * * * * *
        (qq) Technical feasibility or technically feasible means that the 
    technology and management skills necessary to implement an Assessment 
    Plan or Restoration and Compensation Determination Plan are well known 
    and that each element of the plan has a reasonable chance of successful 
    completion in an acceptable period of time.
    * * * * *
        4. Section 11.15 is amended by revising paragraph (a)(3)(ii) to 
    read as follows:
    
    
    Sec. 11.15  Actions against the responsible party for damages.
    
        (a) * * *
        (3) * * *
        (ii) Administrative costs and expenses necessary for, and 
    incidental to, the assessment, assessment planning, and restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    planning, and any restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources undertaken; and
    * * * * *
    
    Subpart C--Assessment Plan Phase
    
        5. Section 11.30 is amended by revising paragraph (c)(1)(v) to read 
    as follows:
    
    
    Sec. 11.30  Assessment Plan--general.
    
    * * * * *
        (c) * * *
        (1) * * *
        (v) Preliminary estimate of damages costs; and
    * * * * *
        6. Section 11.31 is amended by revising paragraph (a)(2), removing 
    paragraph (c)(2), removing the word ``and'' at the end of paragraph 
    (c)(3), replacing the period at the end of paragraph (c)(4) with the 
    words ``; and'', redesignating paragraphs (c)(3) and (c)(4) as 
    paragraphs (c)(2) and (c)(3) respectively, and adding a new paragraph 
    (c)(4) to read as follows:
    
    
    Sec. 11.31  Assessment Plan--content.
    
        (a) * * *
        (2) The Assessment Plan shall be of sufficient detail to serve as a 
    means of evaluating whether the approach used for assessing the damage 
    is likely to be cost-effective and meets the definition of reasonable 
    cost, as those terms are used in this part. The Assessment Plan shall 
    include descriptions of the natural resources and the geographical 
    areas involved. The Assessment Plan shall also include a statement of 
    the authority for asserting trusteeship, or co-trusteeship, for those 
    natural resources considered within the Assessment Plan. The authorized 
    official's statement of the authority for asserting trusteeship shall 
    not have the force and effect of a rebuttable presumption under 
    Sec. 11.91(c) of this part. In addition, for type B assessments, the 
    Assessment Plan shall include the sampling locations within those 
    geographical areas, sample and survey design, numbers and types of 
    samples to be collected, analyses to be performed, preliminary 
    determination of the recovery period, and other such information 
    required to perform the selected methodologies.
    * * * * *
        (c) * * *
        (4) The Restoration and Compensation Determination Plan developed 
    in accordance with the guidance in Sec. 11.81 of this part. If existing 
    data are not sufficient to develop the Restoration and Compensation 
    Determination Plan as part of the Assessment Plan, the Restoration and 
    Compensation Determination Plan may be developed later, at any time 
    before the completion of the Injury Determination or Quantification 
    phases. If the Restoration and Compensation Determination Plan is 
    published separately, the public review and comment will be conducted 
    pursuant to Sec. 11.81(d) of this part.
        7. Section 11.32 is amended by revising paragraphs (a)(2)(iii)(A) 
    and (f)(2), and by removing paragraph (f)(3) to read as follows:
    
    
    Sec. 11.32  Assessment Plan--development.
    
        (a) Pre-development requirements. * * *
        (2) * * *
        (iii)(A) The authorized official shall send a Notice of Intent to 
    Perform an Assessment to all identified potentially responsible 
    parties. The Notice shall invite the participation of the potentially 
    responsible party, or, if several parties are involved and if agreed to 
    by the lead authorized official, a representative or representatives 
    designated by the parties, in the development of the type and scope of 
    the assessment and in the performance of the assessment. The Notice 
    shall briefly describe, to the extent known, the site, vessel, or 
    facility involved, the discharge of oil or release of hazardous 
    substance of concern to the authorized official, and the resources 
    potentially at risk. The Notice shall also contain a statement of 
    authority for asserting trusteeship, or co-trusteeship, over those 
    natural resources identified as potentially at risk.
    * * * * *
        (f) Plan review. * * *
        (2) The purpose of this review is to ensure that the selection of 
    methodologies for the Quantification and Damage Determination phases is 
    consistent with the results of the Injury Determination phase, and that 
    the use of such methodologies remains consistent with the requirements 
    of reasonable cost, as that term is used in this part.
        8. Section 11.35 is revised to read as follows:
    
    
    Sec. 11.35  Assessment Plan--preliminary estimate of damages.
    
        (a) Requirement. When performing a type B assessment pursuant to 
    the requirements of subpart E of this part, the authorized official 
    shall develop a preliminary estimate of: the anticipated costs of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources for the injured natural resources; and the 
    compensable value, as defined in Sec. 11.83(c) of this part, of the 
    injured natural resources, if the authorized official intends to 
    include compensable value in the damage claim. This preliminary 
    estimate is referred to as the preliminary estimate of damages. The 
    authorized official shall use the guidance provided in this section, to 
    the extent possible, to develop the preliminary estimate of damages.
        (b) Purpose. The purpose of the preliminary estimate of damages is 
    for reference in the scoping of the Assessment Plan to ensure that the 
    choice of the scientific, cost estimating, and valuation methodologies 
    expected to be used in the damage assessment fulfills the requirements 
    of reasonable cost, as that term is used in this part. The authorized 
    official will also use the preliminary estimate of damages in the 
    review of the Assessment Plan, as required in Sec. 11.32(f) of this 
    part, to ensure the requirements of reasonable cost are still met.
        (c) Steps. The preliminary estimate of damages should include 
    consideration of the ability of the resources to recover naturally and, 
    if relevant, the compensable value through the recovery period with and 
    without possible alternative actions. The authorized official shall 
    consider the following factors, to the extent possible, in making the 
    preliminary estimate of damages:
        (1) The preliminary estimate of costs of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    should include consideration of a range of possible alternative actions 
    that would accomplish the restoration, rehabilitation, replacement, 
    and/or acquisition of the equivalent of the injured natural resources.
        (i) The preliminary estimate of costs should take into account the 
    effects, or anticipated effects, of any response actions.
        (ii) The preliminary estimate of costs should represent the 
    expected present value of anticipated costs, expressed in constant 
    dollars, and should include direct and indirect costs, and include the 
    timing of those costs. The provisions detailed in Secs. 11.80-11.84 of 
    this part are the basis for the development of the estimate.
        (iii) The discount rate to be used in developing the preliminary 
    estimate of costs shall be that determined in accordance with the 
    guidance in Sec. 11.84(e) of this part.
        (2) The preliminary estimate of compensable value should be 
    consistent with the range of possible alternatives for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    being considered.
        (i) The preliminary estimate of compensable value should represent 
    the expected present value of the anticipated compensable value, 
    expressed in constant dollars, accrued through the period for the 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources to baseline conditions, i.e., between the 
    occurrence of the discharge or release and the completion of the 
    restoration, rehabilitation, replacement, and/or acquisition of the 
    equivalent of the injured resources and their services. The estimate 
    should use the same base year as the preliminary estimate of costs of 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources. The provisions detailed in Secs. 11.80-11.84 of 
    this part are the basis for the development of this estimate.
        (ii) The preliminary estimate of compensable value should take into 
    account the effects, or anticipated effects, of any response actions.
        (iii) The discount rate to be used in developing the preliminary 
    estimate of compensable value shall be that determined in accordance 
    with the guidance in Sec. 11.84(e) of this part.
        (d) Content and timing. (1) In making the preliminary estimate of 
    damages, the authorized official should rely upon existing data and 
    studies. The authorized official should not undertake significant new 
    data collection or perform significant modeling efforts at this stage 
    of the assessment planning phase.
        (2) Where possible, the authorized official should make the 
    preliminary estimate of damages before the completion of the Assessment 
    Plan as provided for in Sec. 11.31 of this part. If there is not 
    sufficient existing data to make the preliminary estimate of damages at 
    the same time as the assessment planning phase, this analysis may be 
    completed later, at the end of the Injury Determination phase of the 
    assessment, at the time of the Assessment Plan review.
        (3) The authorized official is not required to disclose the 
    preliminary estimate before the conclusion of the assessment. At the 
    conclusion of the assessment, the preliminary estimate of damages, 
    along with its assumptions and methodology, shall be included in the 
    Report of the Assessment as provided for in Sec. 11.91 of this part.
        (e) Review. The authorized official shall review, and revise as 
    appropriate, the preliminary estimate of damages at the end of the 
    Injury Determination and Quantification phases. If there is any 
    significant modification of the preliminary estimate of damages, the 
    authorized official shall document it in the Report of the Assessment.
    
    Subpart E--Type B Assessments
    
        9. Section 11.60 is amended by revising paragraphs (d)(1) (iii) and 
    (iv) to read as follows:
    
    
    Sec. 11.60  Type B assessments--general.
    
    * * * * *
        (d) Type B assessment costs. (1) * * *
        (iii) Restoration and Compensation Determination Plan development 
    costs including:
        (A) Development of alternatives;
        (B) Evaluation of alternatives;
        (C) Potentially responsible party, agency, and public reviews;
        (D) Other such costs for activities authorized by Sec. 11.81 of 
    this part;
        (iv) Cost estimating and valuation methodology calculation costs; 
    and
    * * * * *
        10. Section 11.71 is amended by revising paragraphs (a)(2) and 
    (l)(4)(ii) to read as follows:
    
    
    Sec. 11.71  Quantification phase--service reduction quantification.
    
        (a) * * *
        (2) This determination of the reduction in services will be used in 
    the Damage Determination phase of the assessment.
    * * * * *
        (l) Biological resources. * * *
        (4) * * *
        (ii) Provide data that will be useful in planning efforts for 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources, and in later measuring the success of those 
    efforts, and, where relevant, will allow calculation of compensable 
    value; and
    * * * * *
        11. Section 11.72 is amended by revising paragraph (b)(4) to read 
    as follows:
    
    
    Sec. 11.72  Quantification phase--baseline services determination.
    
    * * * * *
        (b) * * *
        (4) Baseline data collection shall be restricted to those data 
    necessary for conducting the assessment at a reasonable cost. In 
    particular, data collected should focus on parameters that are directly 
    related to the injuries quantified in Sec. 11.71 of this part and to 
    data appropriate and necessary for the Damage Determination phase.
    * * * * *
        12. Section 11.73 is amended by revising paragraph (a) to read as 
    follows:
    
    
    Sec. 11.73  Quantification phase--resource recoverability analysis.
    
        (a) Requirement. The time needed for the injured resources to 
    recover to the state that the authorized official determines services 
    are restored, rehabilitated, replaced, and/or the equivalent have been 
    acquired to baseline levels shall be estimated. The time estimated for 
    recovery or any lesser period of time as determined in the Assessment 
    Plan shall be used as the recovery period for purposes of Sec. 11.35 
    and the Damage Determination phase, Secs. 11.80 through 11.84, of this 
    part.
        (1) In all cases, the amount of time needed for recovery if no 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources efforts are undertaken beyond response actions 
    performed or anticipated shall be estimated. This time period shall be 
    used as the ``No Action-Natural Recovery'' period for purposes of 
    Sec. 11.82 and Sec. 11.84(g)(2)(ii) of this part.
        (2) The estimated time for recovery shall be included in possible 
    alternatives for restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources, as developed in Sec. 11.82 of this 
    part, and the data and process by which these recovery times were 
    estimated shall be documented.
    * * * * *
        13. Section 11.80 is revised to read as follows:
    
    
    Sec. 11.80  Damage Determination phase--general.
    
        (a) Requirement. (1) The authorized official shall make his damage 
    determination by estimating the monetary damages resulting from the 
    discharge of oil or release of a hazardous substance based upon the 
    information provided in the Quantification phase and the guidance 
    provided in this Damage Determination phase.
        (2) The Damage Determination phase consists of Sec. 11.80--general; 
    Sec. 11.81--Restoration and Compensation Determination Plan; 
    Sec. 11.82--alternatives for restoration, rehabilitation, replacement, 
    and/or acquisition of equivalent resources; Sec. 11.83--cost estimating 
    and valuation methodologies; and Sec. 11.84--implementation guidance, 
    of this part.
        (b) Purpose. The purpose of the Damage Determination phase is to 
    establish the amount of money to be sought in compensation for injuries 
    to natural resources resulting from a discharge of oil or release of a 
    hazardous substance. The measure of damages is the cost of restoration, 
    rehabilitation, replacement, and/or acquisition of the equivalent of 
    the injured natural resources and the services those resources provide. 
    Damages may also include, at the discretion of the authorized official, 
    the compensable value of all or a portion of the services lost to the 
    public for the time period from the discharge or release until the 
    attainment of the restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent of the resources and their services to 
    baseline.
        (c) Steps in the Damage Determination phase. The authorized 
    official shall develop a Restoration and Compensation Determination 
    Plan, described in Sec. 11.81 of this part. To prepare this Restoration 
    and Compensation Determination Plan, the authorized official shall 
    develop a reasonable number of possible alternatives for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    and select, pursuant to the guidance of Sec. 11.82 of this part, the 
    most appropriate of those alternatives; and identify the cost 
    estimating and valuation methodologies, described in Sec. 11.83 of this 
    part, that will be used to calculate damages. The guidance provided in 
    Sec. 11.84 of this part shall be followed in implementing the cost 
    estimating and valuation methodologies. After public review of the 
    Restoration and Compensation Determination Plan, the authorized 
    official shall implement the Restoration and Compensation Determination 
    Plan.
        (d) Completion of the Damage Determination phase. Upon completion 
    of the Damage Determination phase, the type B assessment is completed. 
    The results of the Damage Determination phase shall be documented in 
    the Report of Assessment described in Sec. 11.90 of this part.
        14. Section 11.81 is revised to read as follows:
    
    
    Sec. 11.81  Damage Determination phase--Restoration and Compensation 
    Determination Plan.
    
        (a) Requirement. (1) The authorized official shall develop a 
    Restoration and Compensation Determination Plan that will list a 
    reasonable number of possible alternatives for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    and the related services lost to the public associated with each; 
    select one of the alternatives and the actions required to implement 
    that alternative; give the rationale for selecting that alternative; 
    and identify the methodologies that will be used to determine the costs 
    of the selected alternative and, at the discretion of the authorized 
    official, the compensable value of the services lost to the public 
    associated with the selected alternative.
        (2) The Restoration and Compensation Determination Plan shall be of 
    sufficient detail to evaluate the possible alternatives for the purpose 
    of selecting the appropriate alternative to use in determining the cost 
    of restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources for the injured natural resources and the services 
    those resources provided, and, where relevant, the compensable value of 
    the services lost to the public through the completion of the 
    restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources and their services to the baseline.
        (b) The authorized official shall use the guidance in Secs. 11.82, 
    11.83, and 11.84 of this part to develop the Restoration and 
    Compensation Determination Plan.
        (c) The authorized official shall list the methodologies he expects 
    to use to determine the costs of all actions considered within the 
    selected alternative and, where relevant, the compensable value of the 
    lost services through the recovery period associated with the selected 
    alternative. The methodologies to use in determining costs and 
    compensable value are described in Sec. 11.83 of this part.
        (d) (1) The Restoration and Compensation Determination Plan shall 
    be part of the Assessment Plan developed in subpart B of this part. If 
    existing data are not sufficient to develop the Restoration and 
    Compensation Determination Plan at the time that the overall Assessment 
    Plan is made available for public review and comment, the Restoration 
    and Compensation Determination Plan may be developed later, after the 
    completion of the Injury Determination or Quantification phases.
        (2) If the Restoration and Compensation Determination Plan is 
    prepared later than the Assessment Plan, it shall be made available 
    separately for public review by any identified potentially responsible 
    party, other natural resource trustees, other affected Federal or State 
    agencies or Indian tribes, and any other interested members of the 
    public for a period of no less than 30 calendar days. Reasonable 
    extensions may be granted as appropriate.
        (3) Comments received from any identified potentially responsible 
    party, other natural resource trustees, other affected Federal or State 
    agencies or Indian tribes, or any other interested members of the 
    public, together with responses to those comments, shall be included as 
    part of the Report of Assessment, described in Sec. 11.90 of this part.
        (4) Appropriate public review of the plan must be completed before 
    the authorized official performs the methodologies listed in the 
    Restoration and Compensation Determination Plan.
        (e) The Restoration and Compensation Determination Plan may be 
    expanded to incorporate requirements from procedures required under 
    other portions of CERCLA or the CWA or from other Federal, State, or 
    tribal laws applicable to restoration, rehabilitation, replacement, 
    and/or acquisition of the equivalent of the injured resources or may be 
    combined with other plans for related purposes, so long as the 
    requirements of this section are fulfilled.
        15. Section 11.82 is revised to read as follows:
    
    
    Sec. 11.82  Damage Determination phase--alternatives for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources.
    
        (a) Requirement. The authorized official shall develop a reasonable 
    number of possible alternatives for the restoration, rehabilitation, 
    replacement, and/or acquisition of the equivalent of the injured 
    natural resources and the services those resources provide. For each 
    possible alternative developed, the authorized official will identify 
    an action, or set of actions, to be taken singly or in combination by 
    the trustee agency to achieve the restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent natural resources and the 
    services those resources provide to the baseline. The authorized 
    official shall then select from among the possible alternatives the 
    alternative that he determines to be the most appropriate based on the 
    guidance provided in this section.
        (b) Steps. (1) The authorized official shall develop a reasonable 
    number of possible alternatives that would restore, rehabilitate, 
    replace, and/or acquire the equivalent of the injured resources. Each 
    of the possible alternatives may, at the discretion of the authorized 
    official, consist of actions, singly or in combination, that would 
    achieve those purposes.
        (i) Restoration or rehabilitation actions are those actions 
    undertaken to return injured resources to their baseline condition, as 
    measured in terms of the physical, chemical, or biological properties 
    that the injured resources would have exhibited or the services that 
    would have been provided by those resources had the discharge of oil or 
    release of the hazardous substance under investigation not occurred. 
    Such actions would be in addition to response actions completed or 
    anticipated pursuant to the National Contingency Plan (NCP).
        (ii) Replacement or acquisition of the equivalent means the 
    substitution for injured resources with resources that provide the same 
    or substantially similar services, when such substitutions are in 
    addition to any substitutions made or anticipated as part of response 
    actions and when such substitutions exceed the level of response 
    actions determined appropriate to the site pursuant to the NCP.
        (iii) Possible alternatives are limited to those actions that 
    restore, rehabilitate, replace, and/or acquire the equivalent of the 
    injured resources and services to no more than their baseline, that is, 
    the condition without a discharge or release as determined in 
    Sec. 11.72 of this part.
        (2) Services provided by the resources. (i) In developing each of 
    the possible alternatives, the authorized official shall list the 
    proposed actions that would restore, rehabilitate, replace, and/or 
    acquire the equivalent of the services provided by the injured natural 
    resources that have been lost, and the period of time over which these 
    services would continue to be lost.
        (ii) The authorized official shall identify services previously 
    provided by the resources in their baseline condition in accordance 
    with Sec. 11.72 of this part and compare those services with services 
    now provided by the injured resources, that is, the with-a-discharge-
    or-release condition. All estimates of the with-a-discharge-or-release 
    condition shall incorporate consideration of the ability of the 
    resources to recover as determined in Sec. 11.73 of this part.
        (c) Range of possible alternatives. (1) The possible alternatives 
    considered by the authorized official that return the injured resources 
    and their lost services to baseline level could range from: Intensive 
    action on the part of the authorized official to return the various 
    resources and services provided by those resources to baseline 
    conditions as quickly as possible; to natural recovery with minimal 
    management actions. Possible alternatives within this range could 
    reflect varying rates of recovery, combination of management actions, 
    and needs for resource replacements or acquisitions.
        (2) An alternative considering natural recovery with minimal 
    management actions, based upon the ``No Action-Natural Recovery'' 
    determination made in Sec. 11.73(a)(1) of this part, shall be one of 
    the possible alternatives considered.
        (d) Factors to consider when selecting the alternative to pursue. 
    When selecting the alternative to pursue, the authorized official shall 
    evaluate each of the possible alternatives based on all relevant 
    considerations, including the following factors:
        (1) Technical feasibility, as that term is used in this part.
        (2) The relationship of the expected costs of the proposed actions 
    to the expected benefits from the restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources.
        (3) Cost-effectiveness, as that term is used in this part.
        (4) The results of any actual or planned response actions.
        (5) Potential for additional injury resulting from the proposed 
    actions, including long-term and indirect impacts, to the injured 
    resources or other resources.
        (6) The natural recovery period determined in Sec. 11.73(a)(1) of 
    this part.
        (7) Ability of the resources to recover with or without alternative 
    actions.
        (8) Potential effects of the action on human health and safety.
        (9) Consistency with relevant Federal, State, and tribal policies.
        (10) Compliance with applicable Federal, State, and tribal laws.
        (e) A Federal authorized official shall not select an alternative 
    that requires acquisition of land for Federal management unless the 
    Federal authorized official determines that restoration, 
    rehabilitation, and/or other replacement of the injured resources is 
    not possible.
        16. Section 11.83 is amended by revising paragraph (a), removing 
    paragraph (c), adding new paragraphs (c)(1) introductory text, 
    (c)(1)(i), (c)(1)(ii), (c)(2) introductory text, (c)(2)(i) through 
    (c)(2)(vi), and (c)(3), redesignating paragraph (b)(2) as paragraph 
    (c)(1)(iii), revising paragraph (b), redesignating paragraphs (d)(5)(i) 
    and (d)(5)(ii) as paragraphs (c)(2)(vii)(A) and (c)(2)(vii)(B) 
    respectively, adding a new paragraph (c)(2)(vii) heading, adding a 
    sentence to newly designated (c)(2)(vii)(A), and removing paragraph (d) 
    to read as follows:
    
    
    Sec. 11.83  Damage Determination phase--cost estimating and valuation 
    methodologies.
    
        (a) General. (1) This section contains guidance and methodologies 
    for determining: The costs of the selected alternative for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources; and the compensable value of the services lost to the public 
    through the completion of the restoration, rehabilitation, replacement, 
    and/or acquisition of the equivalent of the injured resources and their 
    services to baseline.
        (2)(i) The authorized official shall select among the cost 
    estimating and valuation methodologies set forth in this section, or 
    methodologies that meet the acceptance criterion of either paragraph 
    (b)(3) or (c)(3) of this section.
        (ii) The authorized official shall define the objectives to be 
    achieved by the application of the methodologies.
        (iii) The authorized official shall follow the guidance provided in 
    this section for choosing among the methodologies that will be used in 
    the Damage Determination phase.
        (iv) The authorized official shall describe his selection of 
    methodologies and objectives in the Restoration and Compensation 
    Determination Plan.
        (3) The authorized official shall determine that the following 
    criteria have been met when choosing among the cost estimating and 
    valuation methodologies. The authorized official shall document this 
    determination in the Report of the Assessment. Only those methodologies 
    shall be chosen:
        (i) That are feasible and reliable for a particular incident and 
    type of damage to be measured.
        (ii) That can be performed at a reasonable cost, as that term is 
    used in this part.
        (iii) That avoid double counting or that allow any double counting 
    to be estimated and eliminated in the final damage calculation.
        (iv) That are cost-effective, as that term is used in this part.
        (b) Costs of restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources. (1) Costs for restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    are the amount of money determined by the authorized official as 
    necessary to complete all actions identified in the selected 
    alternative for restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources, as selected in the Restoration and 
    Compensation Determination Plan of Sec. 11.81 of this part. Such costs 
    shall include direct and indirect costs, consistent with the provisions 
    of this section.
        (i) Direct costs are those that are identified by the authorized 
    official as attributed to the selected alternative. Direct costs are 
    those charged directly to the conduct of the selected alternative 
    including, but not limited to, the compensation of employees for the 
    time and effort devoted to the completion of the selected alternative; 
    cost of materials acquired, consumed, or expended specifically for the 
    purpose of the action; equipment and other capital expenditures; and 
    other items of expense identified by the authorized official that are 
    expected to be incurred in the performance of the selected alternative.
        (ii) Indirect costs are costs of activities or items that support 
    the selected alternative, but that cannot practically be directly 
    accounted for as costs of the selected alternative. The simplest 
    example of indirect costs is traditional overhead, e.g., a portion of 
    the lease costs of the buildings that contain the offices of trustee 
    employees involved in work on the selected alternative may, under some 
    circumstances, be considered as an indirect cost. In referring to costs 
    that cannot practically be directly accounted for, this subpart means 
    to include costs that are not readily assignable to the selected 
    alternative without a level of effort disproportionate to the results 
    achieved.
        (iii) An indirect cost rate for overhead costs may, at the 
    discretion of the authorized official, be applied instead of 
    calculating indirect costs where the benefits derived from the 
    estimation of indirect costs do not outweigh the costs of the indirect 
    cost estimation. When an indirect cost rate is used, the authorized 
    official shall document the assumptions from which that rate has been 
    derived.
        (2) Cost estimating methodologies. The authorized official may 
    choose among the cost estimating methodologies listed in this section 
    or may choose other methodologies that meet the acceptance criterion in 
    paragraph (b)(3) of this section. Nothing in this section precludes the 
    use of a combination of cost estimating methodologies so long as the 
    authorized official does not double count or uses techniques that allow 
    any double counting to be estimated and eliminated in the final damage 
    calculation.
        (i) Comparison methodology. This methodology may be used for unique 
    or difficult design and estimating conditions. This methodology 
    requires the construction of a simple design for which an estimate can 
    be found and applied to the unique or difficult design.
        (ii) Unit methodology. This methodology derives an estimate based 
    on the cost per unit of a particular item. Many other names exist for 
    describing the same basic approach, such as order of magnitude, lump 
    sum, module estimating, flat rates, and involve various refinements. 
    Data used by this methodology may be collected from technical 
    literature or previous cost expenditures.
        (iii) Probability methodologies. Under these methodologies, the 
    cost estimate represents an ``average'' value. These methodologies 
    require information which is called certain, or deterministic, to 
    derive the expected value of the cost estimate. Expected value 
    estimates and range estimates represent two types of probability 
    methodologies that may be used.
        (iv) Factor methodology. This methodology derives a cost estimate 
    by summing the product of several items or activities. Other terms such 
    as ratio and percentage methodologies describe the same basic approach.
        (v) Standard time data methodology. This methodology provides for a 
    cost estimate for labor. Standard time data are a catalogue of standard 
    tasks typically undertaken in performing a given type of work.
        (vi) Cost- and time-estimating relationships (CERs and TERs). CERs 
    and TERs are statistical regression models that mathematically describe 
    the cost of an item or activity as a function of one or more 
    independent variables. The regression models provide statistical 
    relationships between cost or time and physical or performance 
    characteristics of past designs.
        (3) Other cost estimating methodologies. Other cost estimating 
    methodologies that are based upon standard and accepted cost estimating 
    practices and are cost-effective are acceptable methodologies to 
    determine the costs of restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources under this part.
        (c) Compensable value. (1) Compensable value is the amount of money 
    required to compensate the public for the loss in services provided by 
    the injured resources between the time of the discharge or release and 
    the time the resources and the services those resources provided are 
    fully returned to their baseline conditions. The compensable value 
    includes the value of lost public use of the services provided by the 
    injured resources, plus lost nonuse values such as existence and 
    bequest values. Compensable value is measured by changes in consumer 
    surplus, economic rent, and any fees or other payments collectable by a 
    Federal or State agency or an Indian tribe for a private party's use of 
    the natural resources; and any economic rent accruing to a private 
    party because the Federal or State agency or Indian tribe does not 
    charge a fee or price for the use of the resources.
        (i) Use value is the value of the resources to the public 
    attributable to the direct use of the services provided by the natural 
    resources.
        (ii) Nonuse value is the difference between compensable value and 
    use value, as those terms are used in this section.
    * * * * *
        (2) Valuation methodologies. The authorized official may choose 
    among the valuation methodologies listed in this section to estimate 
    willingness to pay (WTP) or may choose other methodologies provided 
    that the methodology can satisfy the acceptance criterion in paragraph 
    (c)(3) of this section. Nothing in this section precludes the use of a 
    combination of valuation methodologies so long as the authorized 
    official does not double count or uses techniques that allow any double 
    counting to be estimated and eliminated in the final damage 
    calculation.
        (i) Market price methodology. This methodology may be used if the 
    natural resources are traded in the market. In using this methodology, 
    the authorized official should make a determination as to whether the 
    market for the resources is reasonably competitive. If the authorized 
    official determines that the market for the resources, or the services 
    provided by the resources, is reasonably competitive, the diminution in 
    the market price of the injured resources, or the lost services, may be 
    used to determine the compensable value of the injured resources.
        (ii) Appraisal methodology. Where sufficient information exists, 
    the appraisal methodology may be used. In using this methodology, 
    compensable value should be measured, to the extent possible, in 
    accordance with the applicable sections of the ``Uniform Appraisal 
    Standards for Federal Land Acquisition'' (Uniform Appraisal Standards), 
    Interagency Land Acquisition Conference, Washington, DC, 1973 
    (incorporated by reference, see Sec. 11.18). The measure of compensable 
    value under this appraisal methodology will be the difference between 
    the with- and without-injury appraisal value determined by the 
    comparable sales approach as described in the Uniform Appraisal 
    Standards.
        (iii) Factor income methodology. If the injured resources are 
    inputs to a production process, which has as an output a product with a 
    well-defined market price, the factor income methodology may be used. 
    This methodology may be used to determine the economic rent associated 
    with the use of resources in the production process. This methodology 
    is sometimes referred to as the ``reverse value added'' methodology. 
    The factor income methodology may be used to measure the in-place value 
    of the resources.
        (iv) Travel cost methodology. The travel cost methodology may be 
    used to determine a value for the use of a specific area. An 
    individual's incremental travel costs to an area are used as a proxy 
    for the price of the services of that area. Compensable value of the 
    area to the traveler is the difference between the value of the area 
    with and without a discharge or release. When regional travel cost 
    models exist, they may be used if appropriate.
        (v) Hedonic pricing methodology. The hedonic pricing methodology 
    may be used to determine the value of nonmarketed resources by an 
    analysis of private market choices. The demand for nonmarketed natural 
    resources is thereby estimated indirectly by an analysis of commodities 
    that are traded in a market.
        (vi) Unit value methodology. Unit values are preassigned dollar 
    values for various types of nonmarketed recreational or other 
    experiences by the public. Where feasible, unit values in the region of 
    the affected resources and unit values that closely resemble the 
    recreational or other experience lost with the affected resources may 
    be used.
        (vii) Contingent valuation methodology--(A) * * * This methodology 
    may be used to determine lost use values of injured natural resources.
    * * * * *
        (3) Other valuation methodologies. Other valuation methodologies 
    that measure compensable value in accordance with the public's WTP, in 
    a cost-effective manner, are acceptable methodologies to determine 
    compensable value under this part.
        17. Section 11.84 is amended by revising paragraphs (a), (b)(1), 
    (d)(2), (f), and (g) heading, (g)(1), (g)(2) introductory text, (g)(2) 
    (i), (ii), and (iii); removing paragraph (h); and redesignating (i) as 
    new paragraph (h) and revising it to read as follows:
    
    
    Sec. 11.84  Damage Determination phase--implementation guidance.
    
        (a) Requirement. The authorized official should use the cost 
    estimating and valuation methodologies in Sec. 11.83 of this part 
    following the appropriate guidance in this section.
        (b) Determining uses. (1) Before estimating damages for compensable 
    value under Sec. 11.83 of this part, the authorized official should 
    determine the uses made of the resource services identified in the 
    Quantification phase.
    * * * * *
        (d) Uncertainty. * * *
        (2) To incorporate this uncertainty, the authorized official should 
    derive a range of probability estimates for the important assumptions 
    used to determine damages. In these instances, the damage estimate will 
    be the net expected present value of the costs of restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent resources 
    and, if relevant, compensable value.
    * * * * *
        (f) Substitutability. In calculating compensable value, the 
    authorized official should incorporate estimates of the ability of the 
    public to substitute resource services or uses for those of the injured 
    resources. This substitutability should be estimated only if the 
    potential benefits from an increase in accuracy are greater than the 
    potential costs.
        (g) Compensable value during the restoration, rehabilitation, 
    replacement, and/or acquisition of equivalent resources. (1) In 
    determining the amount of damages, the authorized official has the 
    discretion to compute compensable value for the period of time required 
    to achieve the restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources.
        (2) When calculating compensable value during the period of time 
    required to achieve restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources, the authorized official should 
    follow the procedures described below. The procedures need not be 
    followed in sequence.
        (i) The ability of the injured resources to recover over the 
    recovery period should be estimated. This estimate includes estimates 
    of natural recovery rates as well as recovery rates that reflect 
    management actions or resource acquisitions to achieve restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources.
        (ii) A recovery rate should be selected for this analysis that is 
    based upon cost-effective management actions or resource acquisitions, 
    including a ``No Action-Natural Recovery'' alternative. After the 
    recovery rate is estimated, compensable value should be estimated.
        (iii) The rate at which the uses of the injured resources and their 
    services will be restored through the restoration or replacement of the 
    services should be estimated. This rate may be discontinuous, that is, 
    no uses are restored until all, or some threshold level, of the 
    services are restored, or continuous, that is, restoration or 
    replacement of uses will be a function of the level and rate of 
    restoration or replacement of the services. Where practicable, the 
    supply of and demand for the restored services should be analyzed, 
    rather than assuming that the services will be utilized at their full 
    capacity at each period of time in the analysis. Compensable value 
    should be discounted using the rate described in paragraph (e)(2) of 
    this section. This estimate is the expected present value of uses 
    obtained through restoration, rehabilitation, replacement, and/or 
    acquisition of equivalent resources.
    * * * * *
        (h) Scope of the analysis. (1) The authorized official must 
    determine the scope of the analysis in order to estimate compensable 
    value.
        (2) In assessments where the scope of analysis is Federal, only the 
    compensable value to the Nation as a whole should be counted.
        (3) In assessments where the scope of analysis is at the State 
    level, only the compensable value to the State should be counted.
        (4) In assessments where the scope of analysis is at the tribal 
    level, only the compensable value to the tribe should be counted.
    
    Subpart F--Post-Assessment Phase
    
        18. Section 11.90 is amended by revising paragraph (c) to read as 
    follows:
    
    
    Sec. 11.90  Post-assessment phase--Report of Assessment.
    
    * * * * *
        (c) Type B assessments. For a type B assessment conducted in 
    accordance with the guidance in subpart E of this part, the Report of 
    Assessment shall consist of all the documentation supporting the 
    determinations required in the Injury Determination phase, the 
    Quantification phase, and the Damage Determination phase, and 
    specifically including the test results of any and all methodologies 
    performed in these phases. The preliminary estimate of damages shall be 
    included in the Report of Assessment. The Restoration and Compensation 
    Determination Plan, along with comments received during the public 
    review of that Plan and responses to those comments, shall also be 
    included in the Report of Assessment.
        19. Section 11.91 is amended by adding a new paragraph (e) to read 
    as follows:
    
    
    Sec. 11.91  Post-assessment phase--demand.
    
    * * * * *
        (e) Statute of limitations. For the purposes of section 113(g) of 
    CERCLA, the date on which regulations are promulgated under section 
    301(c) of CERCLA is the date on which the later of the revisions to the 
    type A rule and the type B rule, pursuant to State of Colorado v. 
    United States Department of the Interior, 880 F.2d 481 (D.C. Cir. 
    1989), and State of Ohio v. United States Department of the Interior, 
    880 F.2d 432 (D.C. Cir. 1989), is published as a final rule in the 
    Federal Register.
        20. Section 11.92 is amended to revise paragraph (b) to read as 
    follows:
    
    
    Sec. 11.92  Post-assessment phase--restoration account.
    
    * * * * *
        (b) Adjustments. (1) In establishing the account pursuant to 
    paragraph (a) of this section, the calculation of the expected present 
    value of the damage amount should be adjusted, as appropriate, whenever 
    monies are to be placed in a non-interest bearing account. This 
    adjustment should correct for the anticipated effects of inflation over 
    the time estimated to complete expenditures for the restoration, 
    rehabilitation, replacement, and/or acquisition of equivalent 
    resources.
        (2) In order to make the adjustment in paragraph (b)(1) of this 
    section, the authorized official should adjust the damage amount by the 
    rate payable on notes or bonds issued by the United States Treasury 
    with a maturity date that approximates the length of time estimated to 
    complete expenditures for the restoration, rehabilitation, replacement, 
    and/or acquisition of equivalent resources.
    * * * * *
        21. Section 11.93 is amended to revise paragraph (a) to read as 
    follows:
    
    
    Sec. 11.93  Post-assessment phase--Restoration Plan.
    
        (a) Upon determination of the amount of the award of a natural 
    resource damage claim as authorized by section 107(a)(4)(C) of CERCLA, 
    or sections 311(f)(4) and 311(f)(5) of the CWA, the authorized official 
    shall prepare a Restoration Plan as provided in section 111(i) of 
    CERCLA. The plan shall be based upon the Restoration and Compensation 
    Determination Plan described in Sec. 11.81 of this part. The Plan shall 
    describe how the monies will be used to address natural resources, 
    specifically what restoration, rehabilitation, replacement, or 
    acquisition of the equivalent resources will occur. When damages for 
    compensable value have been awarded, the Plan shall also describe how 
    monies will be used to address the services that are lost to the public 
    until restoration, rehabilitation, replacement, and/or acquisition of 
    equivalent resources is completed. The Restoration Plan shall be 
    prepared in accordance with the guidance set forth in Sec. 11.81 of 
    this part.
    * * * * *
        Dated: March 17, 1994.
    Bonnie R. Cohen,
    Assistant Secretary--Policy, Management, and Budget.
    [FR Doc. 94-6749 Filed 3-24-94; 8:45 am]
    BILLING CODE 4310-RG-P
    
    
    

Document Information

Effective Date:
4/25/1994
Published:
03/25/1994
Entry Type:
Uncategorized Document
Action:
Final rule.
Document Number:
94-6749
Dates:
The effective date of the final rule is April 25, 1994.
Pages:
0-0 (1 pages)
Docket Numbers:
Federal Register: March 25, 1994
CFR: (36)
43 CFR 113(a)
43 CFR 11.83(a)(3)
43 CFR 11.82(b)(1)
43 CFR 11.83(b)(3)
43 CFR 11.91(c)
More ...